Re: Three new Pentax DA star lenses: any knowledge?
On Sun, 11 Feb 2007 02:19:22 -0500, P. J. Alling wrote: Actually it makes more sense from a cost and design perspective to drop the drive shaft from the lenses with built in focusing motors than dropping the aperture simulator from the camera body. I expect that the screw drive's days are numbered. From the pics I have seen, the new DA* zooms don't have an aperture ring thus making the aperture simulator redundant on these lenses. From the drive shaft point, Would say that they will dissapear one day. James -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Asahi Pentax Electro-Spotmatic kit
Ebay! By selling each item seperately, he'll get a better price, even though it's a shame to split this fine collection apart. Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Pedro Oliveira Sendt: 3. februar 2007 01:22 Til: 'Pentax-Discuss Mail List' Emne: FS: Asahi Pentax Electro-Spotmatic kit Hello, everyone. A friend of mine asked me to try to sell this extremely rare camera: Asahi Pentax Electro Spotmatic (s/n 5516xxx) + soft case Asahi Pentax Super Multi Coated Takumar 50/1.4 (metal focusing barrel) + original caps Asahi Pentax Super Multi Coated Takumar 28/3.5 (metal focusing barrel) + original caps + hood + case Asahi Pentax Super Multi Coated Takumar 150/4.0 (metal focusing barrel) + original caps + hood + case Herbert Keppler La camara (Spanish version of Asahi Pentax Way, ed. 1973) Everything is in Exc.+ or better. The meter and the aperture priority works. The price for the kit is 700,00€ (does not include postage or insurance). Will ship worldwide. Payment only via Paypal. If interested, please contact me off list and I will send some photos. Best regards. Pedro Oliveira Portugal -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.17.19/663 - Release Date: 02/01/2007 14:28 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
Say goodbye to infinity focus. The reason that FD stuff is cheap is that the register on FD is short (~42mm) and it won't reach infinity focus without optics on any DSLR mount other than 4/3rds. Ditto for Konica AR and Minolta MD mounts (Man, I'd love a Hexanon AR 57/1.2 on a 1.5x crop DSLR, if it was possible). -Adam Collin R Brendemuehl wrote: I'm about to propose a heresy. Nothing that G K Chesterton or Cornelius Plantinga would write about, but heresy never the less. It's come to my attention that a lot of old FD mount lenses are going pretty cheap. And the breech system attached to the outside of the body, not really internal soo Remove the mount from an old Canon body and fuse it to a screw-mount adapter and voila -- a Canon- Pentax adapter. Then just remove the aperture coupling from the lens. Next time I find an old FD body and lens that's worthless, I may give it a try. (I just saw an old Canon 300/4.5 going for a modest price and this idea entered my mind ...) Yes, it is heresy. But can I be cleansed? Somebody help me ... I've fallen. (Or is this a heresy/project better suited to Cotty?) Sincerely, Collin Brendemuehl http://www.brendemuehl.net http://evangelicalperspective.blogspot.com http://philosophyforchristians.blogspot.com He is no fool who gives what he cannot keep to gain what he cannot lose -- Jim Elliott -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
David, I mean, it's not like I keep these things in a glass display case for all and sundry to stare at lovingly. Any you beaut rear cap would hardly ever be seen. :-) this is a preferred solution and also the only acceptable excuse for Pentax for not providing a proper cap - they encourage you to use the lens and that's good thing. :-) I'm seriously considering to get the complete set of the 1st series of Limiteds and share them between MZ-S and ist-Ds. However I'd certainly not buy them in the UK, as pay almost 100% premium in comparison to the US prices is simply too much for my taste (and wallet). Cheers, Peter -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
On 11/2/07, David Savage, discombobulated, unleashed: Maybe I should take the cape get it chromed. That would be a super idea, man. -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: K10D service menu/focus system adjust
On 11/2/07, David Savage, discombobulated, unleashed: DUMMY RELEASE It's able to kick jco off the list? -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
On 2/11/07, Cotty [EMAIL PROTECTED] wrote: On 11/2/07, David Savage, discombobulated, unleashed: Maybe I should take the cape get it chromed. That would be a super idea, man. Har! I was waiting for something like that. Cheers, Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
On 10/2/07, Mark Roberts, discombobulated, unleashed: Did you catch that, Cotty? Lathe! Milling Machine! Far too precise for me - I'm a handheld Dremel guy ;-) -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
On 10/2/07, Tom Simpson, discombobulated, unleashed: I haven't been here all that long, but I gather that this Cotty person is a bad, bad man... In a good way. :-) Actually I'm a good, good man in a bad way. -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
On Sun, 11 Feb 2007 16:21:07 +1000, jim wrote: I only thing I want to know is, will the new lenses have a driveshaft to drive focus as well as the inbuilt motor to support all non K10D digital bodies? I asked that to the rep's at Photokina, and there was no definite answer at that time. I have seen several more reactions from Pentax in various forums since that, and they say these three WILL have the driveshaft coupling as well as SDM for AF. So they work on the older DSLRs too. However, they also said they will decide on a 'per lens' basis in the future about including 'dual' AF. I guess it would drive up the price too much for the cheaper (kit type) lenses ... Regards, JvW -- Jan van Wijk; http://www.dfsee.com/gallery -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
On 11/2/07, Adam Maas, discombobulated, unleashed: Say goodbye to infinity focus. The reason that FD stuff is cheap is that the register on FD is short (~42mm) and it won't reach infinity focus without optics on any DSLR mount other than 4/3rds. Okay, I'll pick up a cheap FD and get cracking. -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
On 10/2/07, Collin R Brendemuehl, discombobulated, unleashed: I'm about to propose a heresy. Nothing that G K Chesterton or Cornelius Plantinga would write about, but heresy never the less. It's come to my attention that a lot of old FD mount lenses are going pretty cheap. And the breech system attached to the outside of the body, not really internal soo Remove the mount from an old Canon body and fuse it to a screw-mount adapter and voila -- a Canon- Pentax adapter. Then just remove the aperture coupling from the lens. Next time I find an old FD body and lens that's worthless, I may give it a try. (I just saw an old Canon 300/4.5 going for a modest price and this idea entered my mind ...) Yes, it is heresy. But can I be cleansed? Somebody help me ... I've fallen. (Or is this a heresy/project better suited to Cotty?) I'm here. Pentax K register distance is 45.46mm Canon FD register distance is 42mm This means that to alter an FD lens to fit a K mount camera (without using an adapter containing an optical element to correct for infinity focus) you would have to remove over 3 and a half mil from the back of the FD lens flange. If you're going to use a 42mm threaded adapter, then add the thickness of the adapter to that. Might be problems in that there's not enough room on the back of the FD lens before problems start in terms of aperture ring etc. You may or may not have problems with the rear element of the lens not clearing the mirror. I don't have an FD to look at, but where there's a will, there's a way. I have some links on the bottom of this page that might be of further interest: http://www.cottysnaps.com/snaps/mods/details.html It's a big job but as an engineering exercise, viable, if expensive. Of course, as a hobbyist, cost is not justifiable so go to it! -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
Maybe I should take the cape get it chromed. That would be a super idea, man. Har! I was waiting for something like that. It would be great for a crusader such as yourself -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
On 11/2/07, P. J. Alling, discombobulated, unleashed: He forces defenseless, innocent, Pentax K mount lenses to mate unnaturally with Canon, (oh the horror), EOS digicameras, by cruelly disfiguring them so that they may never fully enjoy joining with their kind again. sob Oh the humanity, the humanity... If I were a doctor, I would say your condition is inoperable. -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
On 2/11/07, Cotty [EMAIL PROTECTED] wrote: On 10/2/07, Mark Roberts, discombobulated, unleashed: Did you catch that, Cotty? Lathe! Milling Machine! Far too precise for me - I'm a handheld Dremel guy ;-) For a Canon shooter, that itty bitty Dremel toy must be a pathetic.sight in your hands. :-) Cheers, Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
On 2/11/07, Cotty [EMAIL PROTECTED] wrote: On 11/2/07, Adam Maas, discombobulated, unleashed: Say goodbye to infinity focus. The reason that FD stuff is cheap is that the register on FD is short (~42mm) and it won't reach infinity focus without optics on any DSLR mount other than 4/3rds. Okay, I'll pick up a cheap FD and get cracking. Cracking is generally a bad thing in my experience. Cheers, Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Obscure unit conversions
Concentrations of which chemical? In water? Do you have the chemical in your possession? Does the information on the bottle mention anything like the amount of crystal water? Toine On 2/10/07, Bob Shell [EMAIL PROTECTED] wrote: On Feb 10, 2007, at 3:17 PM, Toine wrote: A simple conversion like feet to meters isn't possible. Maybe you could give us the specs mentioned in the paper. OK, it says: The initial concentrations were 2160, 13100 and 2330 nM, respectively Then later in the paper it refers to a concentration of 6.8 mmol Bob -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: RE: *ist-Ds Vs. K10D image quality?
I found the multi-segment metering in the ist-D to be very good - I started using it even though I'd been a lifelong centerweighted-metering photographer up until then. But I've found the multi-segment metering in the K10D to be even better. I hardly ever use centerweighted any more. Switched to multi-segment with the MZ-3, found it to be accurate and consistent although I would occasionally use spot metering fot tricky lighting situations. Up until then I only ever had centre-weighted or a hand held Weston Master V, I think I still have the Weston in a camera bag somewhere. John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: *ist-Ds Vs. K10D image quality?
Jens, I've done this right a 1000 times. And the strategy for a (too) bright sky sky IS the same as for a backlit scenry. And - so why does the *ist D do the exact scenery right (not over compensating)? perhaps you can find the answer here: http://www.luminous-landscape.com/tutorials/expose-right.shtml Cheers, Peter -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
70 210mm
I am looking for an additional lens to complete both my k100d and continue with my k1000 as well. I noticed that there is quite an availability for the pentax A SMC 70-210mm f4 on the internet at very reasonable prices. The other alternative I see is a vivitar 1 series (3rd) 70 210mm f2.8-4. Seems that this lens (according articles) delivers very good optics. Since I havenot use any of the two, I doubt on whcih one is the better choice. The pro for the vivitar seems to me the f2.8, but unsure if the comparison is correct. the Vivitar seems also a bit heavier... thoughts? chr _ All things trendy for Windows Live Messenger ... http://entertainment.msn.be/funwithmessenger -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
On 2/11/07, Cotty [EMAIL PROTECTED] wrote: Maybe I should take the cape get it chromed. That would be a super idea, man. Har! I was waiting for something like that. It would be great for a crusader such as yourself Crusader? Not me mate. Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: 70 210mm
The SMC A 70-210/4 is a great lens. They are very good value for money and worth having. I haven't used any of the Vivitars, so can't make the comparison. -- Bob -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of CHRISTOPHE GRYSPEERT Sent: 11 February 2007 11:31 To: pdml@pdml.net Subject: 70 210mm I am looking for an additional lens to complete both my k100d and continue with my k1000 as well. I noticed that there is quite an availability for the pentax A SMC 70-210mm f4 on the internet at very reasonable prices. The other alternative I see is a vivitar 1 series (3rd) 70 210mm f2.8-4. Seems that this lens (according articles) delivers very good optics. Since I havenot use any of the two, I doubt on whcih one is the better choice. The pro for the vivitar seems to me the f2.8, but unsure if the comparison is correct. the Vivitar seems also a bit heavier... thoughts? chr _ All things trendy for Windows Live Messenger ... http://entertainment.msn.be/funwithmessenger -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
William, PauI, Godfrey, Rob, Peter, David, John ... I don't know what the went wrong yesterday, testing exposure of the K10D. Perhaps the FA* 2.8/80-200mm is not working right with the K10D? Perhaps changing leses many times, metering by manually by Green Button etc. did confuse the cameras or me, or the light perhaps changed betewwn switching camera bodies ? I have no idea. Anyway, today I did some new test shots - comparing the K10D and the *ist D, using two samples of the same Pentax lens: The old SMC Pentax-F 4-5.6 35-80mm. So, I put one of these lenses on both cameras and did a few test shots. I shot the same scenery twice -using the same shutterspeed, same settings (multi-segnment, WB, contrast, sharpness, saturation, ISO 200, RAW). And guess what? The results are quite surpirsing. It seems to me that the K10D in fact does a better job, dealing with contrast. The K10D shots are consistantly the most pleasing shots, despite of the dark scenery/bright sky. Such conditions are very common in our (northern) parts of the world (low sun). Very often our contrasty environment requires manual exposure corrections. It seems the K10D handeled the situation quite well. Much better than the *ist D. I am pleasantly surprised! Judge for your selves. What do you think? http://www.jensbladt.dk/Test/K10D-vs-istD/K10D-test-album.html Thanks for looking - comments area welcome. Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Jens Bladt Sendt: 11. februar 2007 01:03 Til: Pentax-Discuss Mail List Emne: RE: *ist-Ds Vs. K10D image quality? No I've done this right a 1000 times. And the strategy for a (too) bright sky sky IS the same as for a backlit scenry. And - so why does the *ist D do the exact scenery right (not over compensating)? Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af William Robb Sendt: 10. februar 2007 19:55 Til: Pentax-Discuss Mail List Emne: Re: *ist-Ds Vs. K10D image quality? - Original Message - From: Jens Bladt Subject: RE: *ist-Ds Vs. K10D image quality? Regarding exposure, I'll do som emore test tomorrow, evenly lit scenes (walls, grey card etc.) as well ad contraty ones, im order tio figure out if the meter is off or if the matrix metering is over reacting. Surely I can't live with this. When photographing a a scenery with a very bright sky (very common in the northern parts og the world) I must dial in MINUS CORRECTION, when using the K10D. This is the exact opposite of what I have done for the last 30 years! I could never get used to this. My K10D requires reversed backlight compensation. Surely that can't be right! It soulds to me like the metering is compensating the sky as if it was a backlit scene (overexposing to ensure sufficient exposure to the subject). This is what we call subject failure in the industry. I think you will find the meter is behaving normally, and that you will need to adjust your metering strategy for this scene type. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 02/10/2007 21:15 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
On 11/2/07, David Savage, discombobulated, unleashed: Maybe I should take the cape get it chromed. That would be a super idea, man. Har! I was waiting for something like that. It would be great for a crusader such as yourself Crusader? Not me mate. Anyway, as an idea it's super, hero that you are with these things -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
From: Mark Roberts [EMAIL PROTECTED] Date: 2007/02/11 Sun AM 03:55:00 GMT To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: Today's heresy Tom Simpson wrote: Along with this bad attitude of mine, I have a lathe and a milling machine. Did you catch that, Cotty? Lathe! Milling Machine! How quaint. I thought all that sort of stuff was done Dremigitally these days. - Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: The GFM medium format challenge is ON!
Aaron does.:-) Dave On 2/10/07, Scott Loveless [EMAIL PROTECTED] wrote: On 2/10/07, Mark Roberts [EMAIL PROTECTED] wrote: I just ordered the SCSI/Firewire adapter mentioned a few days ago. If Scott Loveless brings his BW chemistry and developing tanks, I'll bring my Minolta Scan Multi II and we'll be in business! And even if it works out that I can't bring the scanner to GFM - if I'm taking my motorcycle for the trip, for example - I'll still be able to use it here to eliminate the SCSI card from my main computer. I'll bring the chemicals. Current plans are HC-110 (it travels light and can handle just about any film). If anyone wants anything else, let me know. I'll see what I can do. My tank will only handle one roll of 120 at a time, but if Dave brings his, too, we'll be in business. Just in case Mark can't get his scanner to GFM, I'll pack the flatbed. Anyone have E-6 chemicals and a Jobo? g -- Scott Loveless http://www.twosixteen.com Shoot more film! -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
My experiences are the same as Bob's. Dave On 2/11/07, Bob W [EMAIL PROTECTED] wrote: The SMC A 70-210/4 is a great lens. They are very good value for money and worth having. I haven't used any of the Vivitars, so can't make the comparison. -- Bob -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of CHRISTOPHE GRYSPEERT Sent: 11 February 2007 11:31 To: pdml@pdml.net Subject: 70 210mm I am looking for an additional lens to complete both my k100d and continue with my k1000 as well. I noticed that there is quite an availability for the pentax A SMC 70-210mm f4 on the internet at very reasonable prices. The other alternative I see is a vivitar 1 series (3rd) 70 210mm f2.8-4. Seems that this lens (according articles) delivers very good optics. Since I havenot use any of the two, I doubt on whcih one is the better choice. The pro for the vivitar seems to me the f2.8, but unsure if the comparison is correct. the Vivitar seems also a bit heavier... thoughts? chr _ All things trendy for Windows Live Messenger ... http://entertainment.msn.be/funwithmessenger -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Three new Pentax DA star lenses: any knowledge?
Not arguing with you about the K200/2.5 but that is a fast FF lens, which is going to be much bigger and heavier than a slow APS (DA) zoom 250mm lens I would think. jco -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bruce Dayton Sent: Saturday, February 10, 2007 11:33 PM To: Pentax-Discuss Mail List Subject: Re: Three new Pentax DA star lenses: any knowledge? I agree on it needing to be removable. The problem I have encountered from time to time with longer lenses without a tripod mount is that the times that I choose to use a tripod becomes much clumsier due to the heavier lens with only the support at the base of the camera. It is much harder for the lens to settle down. My K 200/2.5 is heavy enough that using it on a tripod is problematic. I wish it had a removable mount. -- Best regards, Bruce Saturday, February 10, 2007, 8:06:56 AM, you wrote: JCOC Doesnt sound that logical to me unless its removable. JCOC DA lenses are generally small and light (compared to 35mm) and I JCOC really dont see why they would want to add weight to the lens all JCOC the time for that, especially in light of AS technologies. JCOC With regards to the NEED for the tripod mount, its JCOC not only the focal length or effective focal length JCOC that matters, its also whether the lens itself JCOC has too much weight and too far away center of JCOC gravity from the cameras tripod mount and this is JCOC still only a 250mm slow lens which would seem marginal JCOC to me for really needing a tripod mount in the first JCOC place. JCOC jco JCOC -Original Message- JCOC From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On JCOC Behalf Of Sylwester Pietrzyk JCOC Sent: Saturday, February 10, 2007 10:54 AM JCOC To: Pentax-Discuss Mail List JCOC Subject: Re: Three new Pentax DA star lenses: any knowledge? JCOC On 2007-02-10, at 16:35, Adam Maas wrote: The 60-250 was always announced for summer '07. JCOC The 60-250 is rumoured to be delayed further because final version JCOC would get tripod mount (sounds ligical for these focal length - JCOC 375 mm equiv.) JCOC Cheers, JCOC Sylwek JCOC -- JCOC PDML Pentax-Discuss Mail List JCOC PDML@pdml.net JCOC http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
On 2/11/07, Cotty [EMAIL PROTECTED] wrote: On 11/2/07, David Savage, discombobulated, unleashed: Maybe I should take the cape get it chromed. That would be a super idea, man. Har! I was waiting for something like that. It would be great for a crusader such as yourself Crusader? Not me mate. Anyway, as an idea it's super, hero that you are with these things Good god, I feel dense right at the moment, about 7850kg/m^3. Cheers, Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: AAIP (Another Annsan-Inspired Photograph)
:-) Dave On 2/10/07, Mark Roberts [EMAIL PROTECTED] wrote: I go past this every week and finally decided to grab a photo. I need to go back when the light is better, but you'll get the gist from this... http://www.robertstech.com/temp/aaip.jpg -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
Jens, at al. I did not perform any tests such as this one, however my general impression is that K10D: 1. Has slightly wider dynamic range. 2. Has more consistent auto white balance operation. 3. Renders images in somewhat more faithful way. The colors look more natural. Just my cents. On 2/11/07, Jens Bladt [EMAIL PROTECTED] wrote: William, PauI, Godfrey, Rob, Peter, David, John ... ... And guess what? The results are quite surpirsing. It seems to me that the K10D in fact does a better job, dealing with contrast. ... Judge for your selves. What do you think? http://www.jensbladt.dk/Test/K10D-vs-istD/K10D-test-album.html Thanks for looking - comments area welcome. -- Boris -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Today's heresy
Yes, The registration distance for Canon FD is too short with the original FD mount still attached. Seems what Collin is proposing is hacking off the original mount so infinity focus may still be possible with a Pentax K or M42 adapter/mount installed if enough of the original mount is/can be hacked off. jco -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Adam Maas Sent: Sunday, February 11, 2007 2:28 AM To: Pentax-Discuss Mail List Subject: Re: Today's heresy Say goodbye to infinity focus. The reason that FD stuff is cheap is that the register on FD is short (~42mm) and it won't reach infinity focus without optics on any DSLR mount other than 4/3rds. Ditto for Konica AR and Minolta MD mounts (Man, I'd love a Hexanon AR 57/1.2 on a 1.5x crop DSLR, if it was possible). -Adam Collin R Brendemuehl wrote: I'm about to propose a heresy. Nothing that G K Chesterton or Cornelius Plantinga would write about, but heresy never the less. It's come to my attention that a lot of old FD mount lenses are going pretty cheap. And the breech system attached to the outside of the body, not really internal soo Remove the mount from an old Canon body and fuse it to a screw-mount adapter and voila -- a Canon- Pentax adapter. Then just remove the aperture coupling from the lens. Next time I find an old FD body and lens that's worthless, I may give it a try. (I just saw an old Canon 300/4.5 going for a modest price and this idea entered my mind ...) Yes, it is heresy. But can I be cleansed? Somebody help me ... I've fallen. (Or is this a heresy/project better suited to Cotty?) Sincerely, Collin Brendemuehl http://www.brendemuehl.net http://evangelicalperspective.blogspot.com http://philosophyforchristians.blogspot.com He is no fool who gives what he cannot keep to gain what he cannot lose -- Jim Elliott -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
Your conclusion is most likely correct based on overall experiences with these cameras, but I would question a few things in this specific test procedure. The exact same lens should be used on both cameras and the images should be tweeked on one of the cameras via fine bracketing for exposure value to make up for any variations in camera metering or shutter speeds from camera to camera. It would also be interesting to see what differences remain with both images optimized manually in RAW conversion and photoshop tweeking. I dont know about the K10D, but my istDS doesnt do that great on a bright sunny day scene with lots shadows compared to typical color neg film. Its more like medium speed slide film with regards to handling high contrast scenes like that. jco -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Boris Liberman Sent: Sunday, February 11, 2007 7:55 AM To: Pentax-Discuss Mail List Subject: Re: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?) Jens, at al. I did not perform any tests such as this one, however my general impression is that K10D: 1. Has slightly wider dynamic range. 2. Has more consistent auto white balance operation. 3. Renders images in somewhat more faithful way. The colors look more natural. Just my cents. On 2/11/07, Jens Bladt [EMAIL PROTECTED] wrote: William, PauI, Godfrey, Rob, Peter, David, John ... ... And guess what? The results are quite surpirsing. It seems to me that the K10D in fact does a better job, dealing with contrast. ... Judge for your selves. What do you think? http://www.jensbladt.dk/Test/K10D-vs-istD/K10D-test-album.html Thanks for looking - comments area welcome. -- Boris -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
The Pentax A lens will work with all metering modes. The Vivitar will meter only in manual mode with the green button workaround. Perhaps better than both, although slower, is the DA 50-200/4.5-5.6. Paul On Feb 11, 2007, at 7:50 AM, David J Brooks wrote: My experiences are the same as Bob's. Dave On 2/11/07, Bob W [EMAIL PROTECTED] wrote: The SMC A 70-210/4 is a great lens. They are very good value for money and worth having. I haven't used any of the Vivitars, so can't make the comparison. -- Bob -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of CHRISTOPHE GRYSPEERT Sent: 11 February 2007 11:31 To: pdml@pdml.net Subject: 70 210mm I am looking for an additional lens to complete both my k100d and continue with my k1000 as well. I noticed that there is quite an availability for the pentax A SMC 70-210mm f4 on the internet at very reasonable prices. The other alternative I see is a vivitar 1 series (3rd) 70 210mm f2.8-4. Seems that this lens (according articles) delivers very good optics. Since I havenot use any of the two, I doubt on whcih one is the better choice. The pro for the vivitar seems to me the f2.8, but unsure if the comparison is correct. the Vivitar seems also a bit heavier... thoughts? chr _ All things trendy for Windows Live Messenger ... http://entertainment.msn.be/funwithmessenger -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
CHRISTOPHE GRYSPEERT wrote: The pro for the vivitar seems to me the f2.8, but unsure if the comparison is correct. the Vivitar seems also a bit heavier... thoughts? I've owned the Pentax and two of the Vivitars... but never at the same time. Given the choice I'd recommend the Pentax unless you want/need the close focusing capabilities of the Vivitar versions 1 and 3. (The Pentax goes to 1:4, the Vivitar goes to 1:2.5 magnification.) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
Mark Roberts wrote: I've owned the Pentax and two of the Vivitars... but never at the same time. Given the choice I'd recommend the Pentax unless you want/need the close focusing capabilities of the Vivitar versions 1 and 3. (The Pentax goes to 1:4, the Vivitar goes to 1:2.5 magnification.) Oh yeah: http://www.robertstech.com/vivitar.htm Vivitar version 1 actually goes to 1:2.2, version 3 only goes to 1:2.5 but I sometimes use it with a two-element close-up diopter to get almost 1:1 magnification. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
I saw 60-250/4 at Photokina and it is not small lens. It is about size of Sigma EX 70-200/2.8 that I had, just with 67 mm filter. 60-250 with constant f4 aperture just can't be small, no matter what image circle it produces. Cheers, Sylwek On 2007-02-11, at 13:47, J. C. O'Connell wrote: Not arguing with you about the K200/2.5 but that is a fast FF lens, which is going to be much bigger and heavier than a slow APS (DA) zoom 250mm lens I would think. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
Paul Stenquist wrote: The Pentax A lens will work with all metering modes. The Vivitar will meter only in manual mode with the green button workaround. The third version of the Vivitar 70-210 Series 1 will work with all metering modes: It has the A setting. It's possible that early production runs of v3 had no A setting, but I believe the majority do. I *know* mine does :) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: nM or nanomole - Obscure unit
A nano mole is 1 billionth of a mole. Decimal wise it looks like this .000 000 001. If your chemical compound had a molecular weigh of 1628.25, you would multiple 1628 X .000 000 001 to determine how many grams you would dissolve in a liter to make a 1 nM solution. The term mmol is use for millimole or one thousandth (10-3) of a mole. Usually these solution are made by serial dilution since is very difficult to weigh the small amounts required to make the solutions. Rooney -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
PS: I want to add, that it have always annoyed me a little, that the D has a tendency of colouring overexposed areas redish - rendering very bright parts with a reddish cast. That's one of the reasons I had a tendency of deliberately underexposing, to totally avoid over exposed parts of the images. Thje K10D does not add a reddish cast to the very bright parts. My conclusion is that the image quality of K10D images are in fact superior, compared to the quality of a similar *ist D image. Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Jens Bladt Sendt: 11. februar 2007 13:36 Til: Pentax-Discuss Mail List Emne: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?) William, PauI, Godfrey, Rob, Peter, David, John ... I don't know what the went wrong yesterday, testing exposure of the K10D. Perhaps the FA* 2.8/80-200mm is not working right with the K10D? Perhaps changing leses many times, metering by manually by Green Button etc. did confuse the cameras or me, or the light perhaps changed betewwn switching camera bodies ? I have no idea. Anyway, today I did some new test shots - comparing the K10D and the *ist D, using two samples of the same Pentax lens: The old SMC Pentax-F 4-5.6 35-80mm. So, I put one of these lenses on both cameras and did a few test shots. I shot the same scenery twice -using the same shutterspeed, same settings (multi-segnment, WB, contrast, sharpness, saturation, ISO 200, RAW). And guess what? The results are quite surpirsing. It seems to me that the K10D in fact does a better job, dealing with contrast. The K10D shots are consistantly the most pleasing shots, despite of the dark scenery/bright sky. Such conditions are very common in our (northern) parts of the world (low sun). Very often our contrasty environment requires manual exposure corrections. It seems the K10D handeled the situation quite well. Much better than the *ist D. I am pleasantly surprised! Judge for your selves. What do you think? http://www.jensbladt.dk/Test/K10D-vs-istD/K10D-test-album.html Thanks for looking - comments area welcome. Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Jens Bladt Sendt: 11. februar 2007 01:03 Til: Pentax-Discuss Mail List Emne: RE: *ist-Ds Vs. K10D image quality? No I've done this right a 1000 times. And the strategy for a (too) bright sky sky IS the same as for a backlit scenry. And - so why does the *ist D do the exact scenery right (not over compensating)? Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af William Robb Sendt: 10. februar 2007 19:55 Til: Pentax-Discuss Mail List Emne: Re: *ist-Ds Vs. K10D image quality? - Original Message - From: Jens Bladt Subject: RE: *ist-Ds Vs. K10D image quality? Regarding exposure, I'll do som emore test tomorrow, evenly lit scenes (walls, grey card etc.) as well ad contraty ones, im order tio figure out if the meter is off or if the matrix metering is over reacting. Surely I can't live with this. When photographing a a scenery with a very bright sky (very common in the northern parts og the world) I must dial in MINUS CORRECTION, when using the K10D. This is the exact opposite of what I have done for the last 30 years! I could never get used to this. My K10D requires reversed backlight compensation. Surely that can't be right! It soulds to me like the metering is compensating the sky as if it was a backlit scene (overexposing to ensure sufficient exposure to the subject). This is what we call subject failure in the industry. I think you will find the meter is behaving normally, and that you will need to adjust your metering strategy for this scene type. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- No virus found in this outgoing
Re: Trying to buy the LightRoom
No William I'm not what you describe in any way but since you seems to resort to the same type of argument JCO usually uses when he's angry I suppose you have nothing interesting to say aynmore. Maybe you hsould use aome other OSes and see for yourself. -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Trying to buy the LightRoom
That's not the way they work. Adobe has always been very good on support. Godfrey Fine, I guess they deserve I make confidence in them. If the money follows, I will buy Lightroom. PS an entirely different budget so I will see later. Maybe PSE if limitations aren't too annoying. Thanks for you advices Godfrey. -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Why older lenses are often better than new ones : WAS: RE: Tokina 28-70/2.8 ATX
I agree JC, but then there's also a big part of they way things are manufactured in our era. Sad, for sure but IMO selling lenses now for DAs would be (speaking for me) more about selling F/FA/A which are not that well on a build quality POV rather than selling e.g. my K30/2.8. But selling my F35-70, F28/2.8... why not. 2007/2/11, J. C. O'Connell [EMAIL PROTECTED]: I forgot to mention this on some of the earlier threads concerning old vs new lenses. One of the reasons why many of the early pentax lenses ( late screwmounts and early K/M) mounts are so damn good is due to sample to sample variations ( or lack thereof! ). Not only was the build quality higher throughout the entire lens lineup, but along with it came better MFG quality and quality control. It doesnt matter if you have the worlds latest and greatest optical designs if you cant build them consistantly. Does anybody remember the special feature the Honeywell Pentax screwmount lenses had in this regard? ( this isnt a question I need answered, this is a quiz to the listers!). JCO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Adam Maas Sent: Saturday, February 10, 2007 8:01 PM To: Pentax-Discuss Mail List Subject: Re: Tokina 28-70/2.8 ATX Igor Roshchin wrote: Fri, 09 Feb 2007 07:51:58 -0800 Adam Maas wrote: Pretty much all the 19-35 f3.5-4.5's are actually Cosina lenses. Tokina, Tamron, Vivitar and several others all rebrand them. Not a bad little performer, especially for the (extremely) low cost. -Adam I remember that in 2000, when I was buying this lens, I looked at the comparative review (tests) in Practical Photography (don't mix with Popular Photography). The tests results were different enough to warrant comments comparing the quality of these three. Was it just a sample-to-sample variation, difference in quality control for different brands, or what? Igor Sample variation, almost entirely. -Adam -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
PPS: I have added a little test to my Flickr pages as well: http://www.flickr.com/photos/bladt/sets/72157594529582033/ Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Jens Bladt Sendt: 11. februar 2007 13:36 Til: Pentax-Discuss Mail List Emne: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?) William, PauI, Godfrey, Rob, Peter, David, John ... I don't know what the went wrong yesterday, testing exposure of the K10D. Perhaps the FA* 2.8/80-200mm is not working right with the K10D? Perhaps changing leses many times, metering by manually by Green Button etc. did confuse the cameras or me, or the light perhaps changed betewwn switching camera bodies ? I have no idea. Anyway, today I did some new test shots - comparing the K10D and the *ist D, using two samples of the same Pentax lens: The old SMC Pentax-F 4-5.6 35-80mm. So, I put one of these lenses on both cameras and did a few test shots. I shot the same scenery twice -using the same shutterspeed, same settings (multi-segnment, WB, contrast, sharpness, saturation, ISO 200, RAW). And guess what? The results are quite surpirsing. It seems to me that the K10D in fact does a better job, dealing with contrast. The K10D shots are consistantly the most pleasing shots, despite of the dark scenery/bright sky. Such conditions are very common in our (northern) parts of the world (low sun). Very often our contrasty environment requires manual exposure corrections. It seems the K10D handeled the situation quite well. Much better than the *ist D. I am pleasantly surprised! Judge for your selves. What do you think? http://www.jensbladt.dk/Test/K10D-vs-istD/K10D-test-album.html Thanks for looking - comments area welcome. Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Jens Bladt Sendt: 11. februar 2007 01:03 Til: Pentax-Discuss Mail List Emne: RE: *ist-Ds Vs. K10D image quality? No I've done this right a 1000 times. And the strategy for a (too) bright sky sky IS the same as for a backlit scenry. And - so why does the *ist D do the exact scenery right (not over compensating)? Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af William Robb Sendt: 10. februar 2007 19:55 Til: Pentax-Discuss Mail List Emne: Re: *ist-Ds Vs. K10D image quality? - Original Message - From: Jens Bladt Subject: RE: *ist-Ds Vs. K10D image quality? Regarding exposure, I'll do som emore test tomorrow, evenly lit scenes (walls, grey card etc.) as well ad contraty ones, im order tio figure out if the meter is off or if the matrix metering is over reacting. Surely I can't live with this. When photographing a a scenery with a very bright sky (very common in the northern parts og the world) I must dial in MINUS CORRECTION, when using the K10D. This is the exact opposite of what I have done for the last 30 years! I could never get used to this. My K10D requires reversed backlight compensation. Surely that can't be right! It soulds to me like the metering is compensating the sky as if it was a backlit scene (overexposing to ensure sufficient exposure to the subject). This is what we call subject failure in the industry. I think you will find the meter is behaving normally, and that you will need to adjust your metering strategy for this scene type. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 02/10/2007 21:15 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 02/10/2007 21:15 --
Re: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
Whatever the issue was, i'm glad you have sorted it out to your satisfaction. A proper exposure test would mean, to me, using the same lens and repeating the exact same setup/capture with each of the two camera bodies you are comparing. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Boris - Week 06 (PESO)
This photo provoke some thoughts and feelings in me. It makes me see the building as what it really is, a container for humans and human activity. It could be interesting to hear something about your intentions when pushing the trigger. Tim Mostly harmless (just plain Norwegian) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Boris Liberman Sent: 9. februar 2007 19:49 To: Pentax-Discuss Mail List; PAW Project Discussions Subject: Boris - Week 06 (PESO) Hi! http://not.contaxg.com/document.php?id=16622full=1 The initial title for this image is Silence, Twenty First Century. I wonder if you think it fits. Be brutal and honest, as usual. Thanks. Boris -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
Godfrey, that's basically what I did! If not the very same lens - just two lenses of the exact same model and make. Two K10D's or two *ist D's may be slightlydifferent too. HAd I used the saqme lens - the time difference woukld have been greater too. My test shots were done just seconds apart. You can't really do the exact same thing twice, can you? Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Godfrey DiGiorgi Sendt: 11. februar 2007 16:33 Til: Pentax-Discuss Mail List Emne: Re: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?) Whatever the issue was, i'm glad you have sorted it out to your satisfaction. A proper exposure test would mean, to me, using the same lens and repeating the exact same setup/capture with each of the two camera bodies you are comparing. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 02/10/2007 21:15 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 02/10/2007 21:15 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: A 400/2.8 and A70-210/4
On Thu, 8 Feb 2007, Igor Roshchin wrote: BTW, there was a recent eBay auction where you can see the trunk it normally comes with: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=190071886400 It's impressive. :-) Wow! Thanks Igor. Kostas -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Trying to buy the LightRoom
Thibouille wrote: No William I'm not what you describe in any way but since you seems to resort to the same type of argument JCO usually uses when he's angry I suppose you have nothing interesting to say aynmore. Maybe you hsould use aome other OSes and see for yourself. I've used/administered pretty much every UNIX/Linux and Windows OS versions. I stay away from the OS bashing in every way, because every OS is useful for certain applications. My experience with MacOS is limited but growing. I can see where Mac zealots get their ideas, however I really don't see much difference in the way it works from a user point of view and the way desktop Windows or Linux works. It's simply a matter of getting used to an interface. Behind the scenes, from a systems administrator's position (my job), they differ in huge ways but it really is just a matter of getting used to them. As for stability/bugs/security, I've had windows systems that never crashed and Solaris boxes that wouldn't stay up for a week at a time without a kernel panic. I've never had a virus or spyware on a windows box and I've had linux systems that couldn't run an app to save their lives without major kernel tweaking. Of course, I've had remarkably stable Linux, Solaris and HPUX systems as well (those FAR outnumber the unstable ones (I administer over 1000 Linux, Solaris and HPUX servers; several have uptimes greater than my time at the company which frightens me a little). Any system is as good as you make it or as stable as the applications you run. Finally, my company is allowing me to explore open-source alternatives to the current bloated database apps we run and I'm finding that resources are less taxed and systems more stable for it. Plus the community support is far greater and fixes to common issues are easier to find and more quickly discovered. For my own personal gain, more OSs mean more skills and better opportunities for my career. -- Christian http://photography.skofteland.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
KatzEye with or without Optibrite in a K10D - experience ?
I know with the D/DS/DL the Optibrite made the camera overexpose quite a bit. However on their website, they specificaly say that with the K10 (as well as DL and K100) their was no metering difference with the Optibrite. They do not write that for D/DS/DS2. Is there any feedback concerning the use of Optibrite screens in a K10D? I understand the non-Optibrite screen works well. Is the Optibrite thing really any that good after all? -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: FA77 - going out of production?
On Sat, 10 Feb 2007, Peter Lacus wrote: yep, when I bought my istDs last month I acquired also one of those. It's my first lens from the legendary K-series. Since my istDs familiarization phase is over now, it's a good time to give it a try... It is not typical of the era, I am afraid. Kostas -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?)
JCO, Boris, Godfrey For my purposes I don't really need scientific tests. I'm not a scientist - just a photographer, who wnats to know my tools. I just need to know, if my genral approach to exposure has to change (using a different strategy for exposure corretions). And I wanted to know if my camera meter was off. I believe I have a negative answer to both questions now :-) Except perhaps that the need for exposure corrections (in order to avoid over exposed highlights) has become a some what smaller, when using the K10D. How the K10D will react to sunny sceneries with deep shadows - I have no idea. But I'm sure that the 67% increase of the amount of pixels - and a larger colour depth, will in fact mean improved dynamic range, thus more room for post editing. This may very well be one of the reasons Pentax to choose to let this camera render the images a litle bit darker (this suits me jsut fine). It won't be a huge problem dealing with this later. It would have been much worse having to deal with burned out highlights - believe me, I know :-). Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af J. C. O'Connell Sendt: 11. februar 2007 14:16 Til: 'Pentax-Discuss Mail List' Emne: RE: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?) Your conclusion is most likely correct based on overall experiences with these cameras, but I would question a few things in this specific test procedure. The exact same lens should be used on both cameras and the images should be tweeked on one of the cameras via fine bracketing for exposure value to make up for any variations in camera metering or shutter speeds from camera to camera. It would also be interesting to see what differences remain with both images optimized manually in RAW conversion and photoshop tweeking. I dont know about the K10D, but my istDS doesnt do that great on a bright sunny day scene with lots shadows compared to typical color neg film. Its more like medium speed slide film with regards to handling high contrast scenes like that. jco -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Boris Liberman Sent: Sunday, February 11, 2007 7:55 AM To: Pentax-Discuss Mail List Subject: Re: Better K10D exposure-tests (Was:*ist-Ds Vs. K10D image quality?) Jens, at al. I did not perform any tests such as this one, however my general impression is that K10D: 1. Has slightly wider dynamic range. 2. Has more consistent auto white balance operation. 3. Renders images in somewhat more faithful way. The colors look more natural. Just my cents. On 2/11/07, Jens Bladt [EMAIL PROTECTED] wrote: William, PauI, Godfrey, Rob, Peter, David, John ... ... And guess what? The results are quite surpirsing. It seems to me that the K10D in fact does a better job, dealing with contrast. ... Judge for your selves. What do you think? http://www.jensbladt.dk/Test/K10D-vs-istD/K10D-test-album.html Thanks for looking - comments area welcome. -- Boris -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 02/10/2007 21:15 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 02/10/2007 21:15 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: K10D service menu/focus system adjust
Mmm...if you can dump the EEPROM to the card, and then reload the EEPROM from a file...that imply that you could hack the ever-living hades out of this thing...somebody needs to do an EEPROM dump and then open it up in a text editor and see what there is to see... How would you like to be the lucky person? ;-) http://home.swiftdsl.com.au/~distudio/temp/kb421.zip An interesting snippet searching for strings in the DSP dump: %dmm 50 100 200 400 800 1600 3200 ISO AUTO Hrm... -Cory -- * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering* * Virginia Polytechnic Institute and State University * * -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
You miss my point, the design constraints placed on lenses to maintain both autofocus methods are greater than those placed on the camera body to retain legacy support for older lenses. In one you have to maintain mechanical linkages, where as in the other you only have to run wires so to speak. Why do you think hydraulic controls replaced mechanical rods and cables in automobiles, and aircraft not because they were better, though though they are, but because it's a lot easier to run flexible tubing. Now these same systems are being replaced by fly by wire systems, because it's much easier to run a wire. However some people are just blind. That's one of the advantages of the in lens focusing motor. In the camera body the aperture simulator is a sensor on the end of a wire. jim wrote: On Sun, 11 Feb 2007 02:19:22 -0500, P. J. Alling wrote: Actually it makes more sense from a cost and design perspective to drop the drive shaft from the lenses with built in focusing motors than dropping the aperture simulator from the camera body. I expect that the screw drive's days are numbered. From the pics I have seen, the new DA* zooms don't have an aperture ring thus making the aperture simulator redundant on these lenses. From the drive shaft point, Would say that they will dissapear one day. James -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
Pentax K register distance is 45.46mm Canon FD register distance is 42mm This means that to alter an FD lens to fit a K mount camera (without using an adapter containing an optical element to correct for infinity focus) you would have to remove over 3 and a half mil from the back of the FD lens flange. If you're going to use a 42mm threaded adapter, then add the thickness of the adapter to that. Might be problems in that there's not enough room on the back of the FD lens before problems start in terms of aperture ring etc. You may or may not have problems with the rear element of the lens not clearing the mirror. I don't have an FD to look at, but where there's a will, there's a way. I have some links on the bottom of this page that might be of further interest: http://www.cottysnaps.com/snaps/mods/details.html It's a big job but as an engineering exercise, viable, if expensive. Of course, as a hobbyist, cost is not justifiable so go to it! Registration distance will definately be a problem for this exercise if you want to try to maintain infinity focus. Last time I handled an FD lens, the breech-lock seemed smaller in diameter to the K-mount flange... Maybe it could be made to fit *inside* the K-mount body by 3mm? Of course mirror clearance is a big problem, but maybe for the smaller mirrors of the APS-DSLRs it's OK? -Cory -- * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering* * Virginia Polytechnic Institute and State University * * -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Asahi Pentax Electro-Spotmatic kit
That's not a collection. That's a fine working system. Jens is right, he'll probably get better prices selling them separately. Jens Bladt wrote: Ebay! By selling each item seperately, he'll get a better price, even though it's a shame to split this fine collection apart. Regards Jens Bladt Nytarkort / Greeting Card: http://www.jensbladt.dk/godtnytaar2007/lydshow.html http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 -Oprindelig meddelelse- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Pedro Oliveira Sendt: 3. februar 2007 01:22 Til: 'Pentax-Discuss Mail List' Emne: FS: Asahi Pentax Electro-Spotmatic kit Hello, everyone. A friend of mine asked me to try to sell this extremely rare camera: Asahi Pentax Electro Spotmatic (s/n 5516xxx) + soft case Asahi Pentax Super Multi Coated Takumar 50/1.4 (metal focusing barrel) + original caps Asahi Pentax Super Multi Coated Takumar 28/3.5 (metal focusing barrel) + original caps + hood + case Asahi Pentax Super Multi Coated Takumar 150/4.0 (metal focusing barrel) + original caps + hood + case Herbert Keppler La camara (Spanish version of Asahi Pentax Way, ed. 1973) Everything is in Exc.+ or better. The meter and the aperture priority works. The price for the kit is 700,00€ (does not include postage or insurance). Will ship worldwide. Payment only via Paypal. If interested, please contact me off list and I will send some photos. Best regards. Pedro Oliveira Portugal -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.17.19/663 - Release Date: 02/01/2007 14:28 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.33/678 - Release Date: 02/09/2007 16:06 No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.17.35/680 - Release Date: 2/10/2007 9:15 PM -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
PESO: Female Cormorant
Another Cormorant shot 8) K10D, Sigma 300 f/4 APO, f/5.6 @ 1/100 sec ISO800, RAW (DNG), SR=on, ACR, CS2, USM, crop, Noise Ninja. http://www.photo.net/photodb/photo?photo_id=5581757size=lg Comments and critique appreciated :) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
You could just use this stuff, http://www.krylon.com/main/product_template.cfm?levelid=5sub_levelid=10productid=1751content=product_details I've used it on plastic computer cases and bezels to match colors. It will scrape off but it doesn't flake off, bonds with the surface. I'm sure it's available in silver. Use an old Cotty wrote: On 11/2/07, David Savage, discombobulated, unleashed: Maybe I should take the cape get it chromed. That would be a super idea, man. -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
The third party lenses should be more easily modified since they were essentially the same designs from the mounts forward in most cases. Cotty wrote: On 10/2/07, Collin R Brendemuehl, discombobulated, unleashed: I'm about to propose a heresy. Nothing that G K Chesterton or Cornelius Plantinga would write about, but heresy never the less. It's come to my attention that a lot of old FD mount lenses are going pretty cheap. And the breech system attached to the outside of the body, not really internal soo Remove the mount from an old Canon body and fuse it to a screw-mount adapter and voila -- a Canon- Pentax adapter. Then just remove the aperture coupling from the lens. Next time I find an old FD body and lens that's worthless, I may give it a try. (I just saw an old Canon 300/4.5 going for a modest price and this idea entered my mind ...) Yes, it is heresy. But can I be cleansed? Somebody help me ... I've fallen. (Or is this a heresy/project better suited to Cotty?) I'm here. Pentax K register distance is 45.46mm Canon FD register distance is 42mm This means that to alter an FD lens to fit a K mount camera (without using an adapter containing an optical element to correct for infinity focus) you would have to remove over 3 and a half mil from the back of the FD lens flange. If you're going to use a 42mm threaded adapter, then add the thickness of the adapter to that. Might be problems in that there's not enough room on the back of the FD lens before problems start in terms of aperture ring etc. You may or may not have problems with the rear element of the lens not clearing the mirror. I don't have an FD to look at, but where there's a will, there's a way. I have some links on the bottom of this page that might be of further interest: http://www.cottysnaps.com/snaps/mods/details.html It's a big job but as an engineering exercise, viable, if expensive. Of course, as a hobbyist, cost is not justifiable so go to it! -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Calibrated my monitor, soon to load the 2400 and questions.
Hi all. Well i finally got around to loading Optical and doinga calabration on my 5 year old, 17, CRT. It took a bit to find the sensor, i finally chose spyderusb and that seemed to open the buttons so i could actually click on the calibrate button. Hope that was the right one Mark R.:-) I did it as instructed to do, and it made a profile called default monitor2-11-07 and stored it in window/system32 etc etc. Now. Is this loaded each time i start up or do i have to load it my self. I looked at some photos i sent out as a CD for a client, and they seem to have a bit more pop to them, than from what i remember lastweek. Monitor seems to have a very slight magenta feel to itbut it could be that i'm looking at colours as they should be.I was having trouble keping the unit stuck to the screen, so i rested my finger on the back, ever so lightly. It didi slip down a tiny bit, but never left the glass. Am i ok here.? Now, i'll be setting up the 2400asap. Should i expect the priints to look like they do on the monitor now. Before with my uncal monitor and the S800, they were close, but i can see difference's in shade of grass etc.The colours shifted close to screen after they dried about an hour or so. Should i see the same with the 2400?? Dave -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
If you were a doctor I'd fear for the livestock... :-P Cotty wrote: On 11/2/07, P. J. Alling, discombobulated, unleashed: He forces defenseless, innocent, Pentax K mount lenses to mate unnaturally with Canon, (oh the horror), EOS digicameras, by cruelly disfiguring them so that they may never fully enjoy joining with their kind again. sob Oh the humanity, the humanity... If I were a doctor, I would say your condition is inoperable. -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: KatzEye with or without Optibrite in a K10D - experience ?
On Feb 11, 2007, at 7:56 AM, Thibouille wrote: I know with the D/DS/DL the Optibrite made the camera overexpose quite a bit. However on their website, they specificaly say that with the K10 (as well as DL and K100) their was no metering difference with the Optibrite. They do not write that for D/DS/DS2. Is there any feedback concerning the use of Optibrite screens in a K10D? I understand the non-Optibrite screen works well. Is the Optibrite thing really any that good after all? I think I posted about this a week or two back, but I'll restate it briefly: I have a Katz Eye screen custom made for the DS with no focusing aid .. just simpler markings and a plain matte focusing surface, no OptiBrite. It introduces no differences in metering when used in the DS body compared to the Pentax OEM focusing screen, just gives me a simpler, cleaner framing view with a slightly nicer focusing surface. Since the DS and K10D screens are physically interchangeable, I did a set of metering calibration test shots with the DS, then switched to the K10D. Did a metering calibration test with the OEM screen, switched the screen to the KatzEye and repeated the test. The results showed that the K10D with OEM screen metered a reference neutral gray reflectance target just about right on the money, the DS metered it and returned results about .3EV underexposed. Fitting the KatzEye into the K10D produced consistent underexposure of .7 to 1 EV. I phoned Rachael Katz and discussed this with her. It seems that the way the K10D screen's scatter has been tuned delivers more light to the eyepiece and less to the metering sensors, and the metering calibration has been tuned to that difference for the OEM screen. More light getting to the sensors than expected causes underexposure. The standard DS screen and standard KatzEye screen are very similar in scatter characteristic so produce on-calibration results for the DS metering sensors, but the K10D's metering sensors are expecting less light. The OptiBrite treatment does a similar thing: it tunes the Katz Eye screen's scatter to direct more light at the eye piece which will have the result of reducing the light going to the metering sensors, with a result that the DS calibration curve adds exposure to compensate resulting in overexposure. So the conjecture is that the Katz Eye OptiBrite screen would produce closer to calibration target results more similar to the K10D OEM screen. But of course I'd have to buy one to test this theory out ... and since the advantage I'm looking at is really very small, given the quality of the K10D's OEM screen, I elected not to and will just use the standard screen or Pentax replacement with the reticle crosshairs. The OptiBrite treatment raises screen brightness with a small decrease in focusing surface contrast. Whether that's what you want or not depends upon how you intend to use your camera. I wanted a better surface for manual focusing, that's why I elected not to buy it when I ordered the screen for the DS. Most people buying the Katz Eye screens are buying them to use the optical focusing aids and screen contrast is less important, they just want it bright. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
On 2/11/07 11:37 AM, K.Takeshita, [EMAIL PROTECTED] wrote: There has been an undercurrent effort to eliminate mirror and prism etc, and the legacy concept of SLR which every maker has been confined to and dragged from 35mm SLR era might change dramatically sooner than we think :-). With a rapid shift to digital, makers are finding both restrictions and freedom in camera/lens design. There is even a rumour of Canon changing the mount (again!). More realistic anticipation is Oly coming up with mirrorless body with live view etc. Not that I personally want to see any particular (and dramatic) change, makers seem to be struggling to get out of spellbound legacy 35mm film SLR format which they really do not have to follow any more. People like Oly are apparently seeing this an opportunity to get ahead of competition. Some time ago, I posted a hearsay from a camera reviewer that some big announcements be made in CES in Las Vegas. Obviously, it did not meet in time for it, but it is predicted that some major announcements be made in many areas including sensor technologies and new lenses in coming PMA. Just take this as a musing reading material at this time :-). Ken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
On 2/11/07 11:31 AM, P. J. Alling, [EMAIL PROTECTED] wrote: That's one of the advantages of the in lens focusing motor. With the advent of SSM lenses, I am sure Pentax want to get rid of AF motor from camera body which will give them more room to work with, and possibly reduce required stiffness to cope with torque, and perhaps another major (electronic) noise source. With so many legacy lenses, I doubt they can do it, but there might be a new line of bodies in the future without AF motor, much like Canon AND Nikon D40. There has been an undercurrent effort to eliminate mirror and prism etc, and the legacy concept of SLR which every maker has been confined to and dragged from 35mm SLR era might change dramatically sooner than we think :-). Ken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
The problem with A series lenses with the K100D will be that they don't transmit actual focal length to the camera body, which means that you'll have to manually input the focal length for SR, (something that doesn't bother me with a fixed focal length lens but might with a zoom). You might want to look for a smcp F or FA 70-200 4-5.6 or even better the smcp F 70-210. Manual focus feel is well awful but the lens itself is suburb, and built like a tank. Just a bit slower than the A 70-210 with variable aperture but you're already considering the Vivitar with the same aperture limitation. Stay away from the non smc Pentax or takumar K lenses in the same focal lengths unless you can get them essentially free. They're bottom of the barrel. CHRISTOPHE GRYSPEERT wrote: I am looking for an additional lens to complete both my k100d and continue with my k1000 as well. I noticed that there is quite an availability for the pentax A SMC 70-210mm f4 on the internet at very reasonable prices. The other alternative I see is a vivitar 1 series (3rd) 70 210mm f2.8-4. Seems that this lens (according articles) delivers very good optics. Since I havenot use any of the two, I doubt on whcih one is the better choice. The pro for the vivitar seems to me the f2.8, but unsure if the comparison is correct. the Vivitar seems also a bit heavier... thoughts? chr _ All things trendy for Windows Live Messenger ... http://entertainment.msn.be/funwithmessenger -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Calibrated my monitor, soon to load the 2400 and questions.
On 2/11/07, David J Brooks [EMAIL PROTECTED] wrote: Well i finally got around to loading Optical and doinga calabration on my 5 year old, 17, CRT. I have an 8-year-old CRT that calibrates quite nicely still. :-) It took a bit to find the sensor, i finally chose spyderusb and that seemed to open the buttons so i could actually click on the calibrate button. Hope that was the right one Mark R.:-) I'm not Mark R., but if you're using a Colorvision Spyder, that sounds correct. I did it as instructed to do, and it made a profile called default monitor2-11-07 and stored it in window/system32 etc etc. Now. Is this loaded each time i start up or do i have to load it my self. There should be an application running at startup, called either OptiCal or PhotoCal. You may only see it blink on the screen briefly. But that's what's setting the correct settings on your video card to keep the monitor calibrated. (The term monitor calibration is kind of a misnomer. Really, you're calibrating the monitor, and the video card together.) Monitor seems to have a very slight magenta feel to itbut it could be that i'm looking at colours as they should be.I was having trouble keping the unit stuck to the screen, so i rested my finger on the back, ever so lightly. It didi slip down a tiny bit, but never left the glass. Am i ok here.? I think you're okay there. Remember to clean the glass of the CRT before trying to stick the Spyder to it. It doesn't stick well to dirt and dust. :-) The default color settings of most monitors are somewhat blue (9300K color temp), so if you calibrated to 6500K, it'll look a little magenta until you get used to it. Now, i'll be setting up the 2400asap. Should i expect the priints to look like they do on the monitor now. If you do it right, they'll be very close. I'm not sure what version of Photoshop you have, but I know CS and CS2 have a Proofing view, that will simulate the effect of the paper and printer combination. Just make sure you have ICC profiles loaded for the printer/paper combination you're using. If you're using the Epson papers, the profiles should already be there. Anyone else's, you'll have to get them from the paper manufacturer. Before with my uncal monitor and the S800, they were close, but i can see difference's in shade of grass etc.The colours shifted close to screen after they dried about an hour or so. Should i see the same with the 2400?? You may see some color shifts in the highlights or the shadows, but it's no worse than what you get with real photographic prints, in my experience. One of the big things I gained when I got things calibrated right and started printing with ICC profiles, was a LOT more shadow detail apparent in the prints. The default settings were printing the darks too dark and muddy. Good luck! -Mat -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
I wish I could help you with the comparison, but only have and use the A 70-210/4. It is an excellent lens and is even useable wide open. It should be noted that this is a one-touch zoom meaning that you focus and zoom with the same single ring. If you practice, this can be very fast to do, however, on a tripod, it is easier to get zoom creep. I am not sure about the Vivitar concerning the A setting. That would be a consideration of mine also. If the Vivitar is a pure manual lens, most of the exposure modes would not be available. -- Bruce Sunday, February 11, 2007, 3:30:46 AM, you wrote: CG I am looking for an additional lens to complete both my k100d and continue CG with my k1000 as well. CG I noticed that there is quite an availability for the pentax A SMC 70-210mm CG f4 on the internet at very reasonable prices. CG The other alternative I see is a vivitar 1 series (3rd) 70 210mm f2.8-4. CG Seems that this lens (according articles) delivers very good optics. CG Since I havenot use any of the two, I doubt on whcih one is the better CG choice. CG The pro for the vivitar seems to me the f2.8, but unsure if the comparison CG is correct. the Vivitar seems also a bit heavier... CG thoughts? CG chr CG _ CG All things trendy for Windows Live Messenger ... CG http://entertainment.msn.be/funwithmessenger -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO: Female Cormorant
John, not to sound impolite, but the noise and the rendering seem to be leaving certain room for improvement. I am having now the FA 80-320 and I am struggling with the proper technique to shoot hand held at 320 mm as well. Yet, I think you may have to do a bit more homework, so to say. Again, no offense of any kind is meant. Boris On 2/11/07, John Whittingham [EMAIL PROTECTED] wrote: Another Cormorant shot 8) K10D, Sigma 300 f/4 APO, f/5.6 @ 1/100 sec ISO800, RAW (DNG), SR=on, ACR, CS2, USM, crop, Noise Ninja. http://www.photo.net/photodb/photo?photo_id=5581757size=lg Comments and critique appreciated :) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Boris -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
On 2/11/07 11:37 AM, P. J. Alling, [EMAIL PROTECTED] wrote: You could just use this stuff, http://www.krylon.com/main/product_template.cfm?levelid=5sub_levelid=10produ ctid=1751content=product_details I've used it on plastic computer cases and bezels to match colors. It will scrape off but it doesn't flake off, bonds with the surface. I'm sure it's available in silver. My recommendation, if you really want to do it, is use of powder coating spray can. It comes in various colours. You pre-warm an object to 30 C or so, and spray powder coating. Then put it in kitchen oven at 80 C or so (I have to check the temp) for about 45 minutes. Coating will never flake off. This is really for metallic material but as long as you are careful setting the oven temp low enough for plastic :-). Ken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Calibrated my monitor, soon to load the 2400 and questions.
I don't use Windows enough to comment on the screen calibration and configuraiton setup for that environment. On Feb 11, 2007, at 8:28 AM, David J Brooks wrote: ... Now, i'll be setting up the 2400asap. Should i expect the priints to look like they do on the monitor now. Before with my uncal monitor and the S800, they were close, but i can see difference's in shade of grass etc.The colours shifted close to screen after they dried about an hour or so. Should i see the same with the 2400?? Presuming you use a profiled printing workflow and have a good profile for the paper you're using, prints should match your screen to within a very small range of deviation after dry down. Depending upon what I'm printing, dry down can take an hour or a day: BWs with lots of deep tones and color prints with lots of highly saturated colors load the paper with a lot of ink, they take the longest to dry down. (Note that I use only Matte surface papers. Glossy papers might be different ...) I find profiles included with the R2400 for Epson Enhanced Matte and Velvet Fine Art papers are superb, they work beautifully with a profiled workflow when printing from both Photoshop CS2 and Lightroom v4.1 beta. The ones supplied for Moab Kayenta and Hahnemühle Fine Art Photo Rag are not as accurate, I've gotten better results with both going to the print driver's Advanced Color/BW Controls. I suspect that if I want to use them a lot, I'll need to have custom profiles made up or get a print profiling package. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: 70 210mm
He's talking about the third version, which came in two versions the for Pentax K and Ka, so that would depend. Paul Stenquist wrote: The Pentax A lens will work with all metering modes. The Vivitar will meter only in manual mode with the green button workaround. Perhaps better than both, although slower, is the DA 50-200/4.5-5.6. Paul On Feb 11, 2007, at 7:50 AM, David J Brooks wrote: My experiences are the same as Bob's. Dave On 2/11/07, Bob W [EMAIL PROTECTED] wrote: The SMC A 70-210/4 is a great lens. They are very good value for money and worth having. I haven't used any of the Vivitars, so can't make the comparison. -- Bob -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of CHRISTOPHE GRYSPEERT Sent: 11 February 2007 11:31 To: pdml@pdml.net Subject: 70 210mm I am looking for an additional lens to complete both my k100d and continue with my k1000 as well. I noticed that there is quite an availability for the pentax A SMC 70-210mm f4 on the internet at very reasonable prices. The other alternative I see is a vivitar 1 series (3rd) 70 210mm f2.8-4. Seems that this lens (according articles) delivers very good optics. Since I havenot use any of the two, I doubt on whcih one is the better choice. The pro for the vivitar seems to me the f2.8, but unsure if the comparison is correct. the Vivitar seems also a bit heavier... thoughts? chr _ All things trendy for Windows Live Messenger ... http://entertainment.msn.be/funwithmessenger -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
Cotty wrote: On 11/2/07, David Savage, discombobulated, unleashed: Maybe I should take the cape get it chromed. That would be a super idea, man. Har! I was waiting for something like that. It would be great for a crusader such as yourself Crusader? Not me mate. Anyway, as an idea it's super, hero that you are with these things Caped Crusader yea, yea, yea, the rest of us get it! -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: K10D service menu/focus system adjust
:D let's hack that one :) 2007/2/11, Cory Papenfuss [EMAIL PROTECTED]: Mmm...if you can dump the EEPROM to the card, and then reload the EEPROM from a file...that imply that you could hack the ever-living hades out of this thing...somebody needs to do an EEPROM dump and then open it up in a text editor and see what there is to see... How would you like to be the lucky person? ;-) http://home.swiftdsl.com.au/~distudio/temp/kb421.zip An interesting snippet searching for strings in the DSP dump: %dmm 50 100 200 400 800 1600 3200 ISO AUTO Hrm... -Cory -- * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering* * Virginia Polytechnic Institute and State University * * -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Trying to buy the LightRoom
I've used/administered pretty much every UNIX/Linux and Windows OS versions. I stay away from the OS bashing in every way, because every OS is useful for certain applications. My experience with MacOS is limited but growing. I can see where Mac zealots get their ideas, however I really don't see much difference in the way it works from a user point of view and the way desktop Windows or Linux works. It's simply a matter of getting used to an interface. Behind the scenes, from a systems administrator's position (my job), they differ in huge ways but it really is just a matter of getting used to them. Yeah that's what I think (think because although I've programming studies, I've never been in a position allowing me do other than guessing on that point. As for stability/bugs/security, I've had windows systems that never crashed and Solaris boxes that wouldn't stay up for a week at a time without a kernel panic. I've never had a virus or spyware on a windows box and I've had linux systems that couldn't run an app to save their lives without major kernel tweaking. Of course, I've had remarkably stable Linux, Solaris and HPUX systems as well (those FAR outnumber the unstable ones (I administer over 1000 Linux, Solaris and HPUX servers; several have uptimes greater than my time at the company which frightens me a little). Any system is as good as you make it or as stable as the applications you run. Finally, my company is allowing me to explore open-source alternatives to the current bloated database apps we run and I'm finding that resources are less taxed and systems more stable for it. Plus the community support is far greater and fixes to common issues are easier to find and more quickly discovered. I'm not suprised at all. But the only system I used (and still use) which becomes slower not installing a single software is Windows. Just day to day use. I never saw that with other OSes. That doesn't mean Windows is full of s*** and others are wonderful. I don't like Windows much but I reckon for a couple reasons it is my only way of having a simple life not having to reboot an other OS 3 times a day. But because I use a product doens't mean all is perfect but it seems some think so. For my own personal gain, more OSs mean more skills and better opportunities for my career. I understand that pretty well :) -- Christian http://photography.skofteland.net -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
I'd say that the replacement for K100 will get SSM and replacement of that one will be SSM-only. A potential K1000 could be SSM-only if Pentax comes with 18-55/50-200 updated with SSM (17-70 anyone?). 2007/2/11, K.Takeshita [EMAIL PROTECTED]: On 2/11/07 11:31 AM, P. J. Alling, [EMAIL PROTECTED] wrote: That's one of the advantages of the in lens focusing motor. With the advent of SSM lenses, I am sure Pentax want to get rid of AF motor from camera body which will give them more room to work with, and possibly reduce required stiffness to cope with torque, and perhaps another major (electronic) noise source. With so many legacy lenses, I doubt they can do it, but there might be a new line of bodies in the future without AF motor, much like Canon AND Nikon D40. There has been an undercurrent effort to eliminate mirror and prism etc, and the legacy concept of SLR which every maker has been confined to and dragged from 35mm SLR era might change dramatically sooner than we think :-). Ken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
Some time ago, I posted a hearsay from a camera reviewer that some big announcements be made in CES in Las Vegas. Obviously, it did not meet in time for it, but it is predicted that some major announcements be made in many areas including sensor technologies and new lenses in coming PMA. Just take this as a musing reading material at this time :-). Ken You have good teasing skills, Ken ;) Are you targeting general DSLR industry or Pentax? (or both?) -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO: Female Cormorant
Couple of issues - the image is a little large to be viewed without scrolling. This takes away from the impact. You might consider a smaller image size or offer multiple image sizes. Also, it seems rather grainy - something that could be fixed perhaps. Lastly, it seems overexposed. The white on it's head seems blown out and the overall rendering just looks washed out. If you could take a crack at those issues and then repost, I think we could talk about the photographic values of it - rather than the processing aspects. --- Bruce Sunday, February 11, 2007, 8:24:58 AM, you wrote: JW Another Cormorant shot 8) JW K10D, Sigma 300 f/4 APO, f/5.6 @ 1/100 sec ISO800, RAW (DNG), SR=on, ACR, JW CS2, USM, crop, Noise Ninja. JW http://www.photo.net/photodb/photo?photo_id=5581757size=lg JW Comments and critique appreciated :) JW John JW JW The information transmitted is intended only for the person JW to whom it is addressed and may contain JW confidential and/or privileged material. If you have received JW an email in error please notify Carmel College JW on [EMAIL PROTECTED] then delete all copies of it from your systems. JW Although Carmel College scans incoming and outgoing emails JW and email attachments for viruses we cannot JW guarantee a communication to be free of all viruses nor JW accept any responsibility for viruses. JW Although Carmel College monitors incoming and outgoing emails JW for inappropriate content, the college cannot JW be held responsible for the views or expressions of the author. JW The views expressed may not necessarily be those of Carmel JW College and Carmel College cannot be held JW responsible for any loss or injury resulting from the contents of a message. JW -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO: Female Cormorant
John, not to sound impolite, but the noise and the rendering seem to be leaving certain room for improvement. I am having now the FA 80- 320 and I am struggling with the proper technique to shoot hand held at 320 mm as well. Yet, I think you may have to do a bit more homework, so to say. Again, no offense of any kind is meant. No offence taken, the noise was unavoidable really ISO800, the light isn't good early morning, UK, February. Any recommendations? Anyone? At least the SR seems to be working 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
Mirror height is about the same in the *ist-D[x] series, width changes with the Ds to the APS format. I'd get an old A body I didn't care much about to experiment with. Cory Papenfuss wrote: Pentax K register distance is 45.46mm Canon FD register distance is 42mm This means that to alter an FD lens to fit a K mount camera (without using an adapter containing an optical element to correct for infinity focus) you would have to remove over 3 and a half mil from the back of the FD lens flange. If you're going to use a 42mm threaded adapter, then add the thickness of the adapter to that. Might be problems in that there's not enough room on the back of the FD lens before problems start in terms of aperture ring etc. You may or may not have problems with the rear element of the lens not clearing the mirror. I don't have an FD to look at, but where there's a will, there's a way. I have some links on the bottom of this page that might be of further interest: http://www.cottysnaps.com/snaps/mods/details.html It's a big job but as an engineering exercise, viable, if expensive. Of course, as a hobbyist, cost is not justifiable so go to it! Registration distance will definately be a problem for this exercise if you want to try to maintain infinity focus. Last time I handled an FD lens, the breech-lock seemed smaller in diameter to the K-mount flange... Maybe it could be made to fit *inside* the K-mount body by 3mm? Of course mirror clearance is a big problem, but maybe for the smaller mirrors of the APS-DSLRs it's OK? -Cory -- * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering* * Virginia Polytechnic Institute and State University * * -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
You have more faith in the perfectibility of LCD's than I do. K.Takeshita wrote: On 2/11/07 11:31 AM, P. J. Alling, [EMAIL PROTECTED] wrote: That's one of the advantages of the in lens focusing motor. With the advent of SSM lenses, I am sure Pentax want to get rid of AF motor from camera body which will give them more room to work with, and possibly reduce required stiffness to cope with torque, and perhaps another major (electronic) noise source. With so many legacy lenses, I doubt they can do it, but there might be a new line of bodies in the future without AF motor, much like Canon AND Nikon D40. There has been an undercurrent effort to eliminate mirror and prism etc, and the legacy concept of SLR which every maker has been confined to and dragged from 35mm SLR era might change dramatically sooner than we think :-). Ken -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
On 2/11/07 12:06 PM, Thibouille, [EMAIL PROTECTED] wrote: You have good teasing skills, Ken ;) Are you targeting general DSLR industry or Pentax? (or both?) general DSLR industry Ken P.S. Not particularly related to this, but I would be awfully interested if someone would come up with a compact mirrorless rangefinder style SLR (Leica M8 style) with 4/3 or APS-C sensor. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: KatzEye with or without Optibrite in a K10D - experience ?
I knew about your custom-DS screen but somehow forgot about the rest of the story (so I didn't check the archives). My primary reason for buyign a Katzeye screen is for manually focussing (mainly my newly acquired A50/1.7 from a list member) and so you explanation is *very* welcome for me. I'll defenitely go without the Optibrite thingie. One last question: with a Katzeye screen, you still get AF points in the viewfinder in red? If yes, I don't care about AF brackets (and money saved). Thanks, Godfrey. 2007/2/11, Godfrey DiGiorgi [EMAIL PROTECTED]: On Feb 11, 2007, at 7:56 AM, Thibouille wrote: I know with the D/DS/DL the Optibrite made the camera overexpose quite a bit. However on their website, they specificaly say that with the K10 (as well as DL and K100) their was no metering difference with the Optibrite. They do not write that for D/DS/DS2. Is there any feedback concerning the use of Optibrite screens in a K10D? I understand the non-Optibrite screen works well. Is the Optibrite thing really any that good after all? I think I posted about this a week or two back, but I'll restate it briefly: I have a Katz Eye screen custom made for the DS with no focusing aid .. just simpler markings and a plain matte focusing surface, no OptiBrite. It introduces no differences in metering when used in the DS body compared to the Pentax OEM focusing screen, just gives me a simpler, cleaner framing view with a slightly nicer focusing surface. Since the DS and K10D screens are physically interchangeable, I did a set of metering calibration test shots with the DS, then switched to the K10D. Did a metering calibration test with the OEM screen, switched the screen to the KatzEye and repeated the test. The results showed that the K10D with OEM screen metered a reference neutral gray reflectance target just about right on the money, the DS metered it and returned results about .3EV underexposed. Fitting the KatzEye into the K10D produced consistent underexposure of .7 to 1 EV. I phoned Rachael Katz and discussed this with her. It seems that the way the K10D screen's scatter has been tuned delivers more light to the eyepiece and less to the metering sensors, and the metering calibration has been tuned to that difference for the OEM screen. More light getting to the sensors than expected causes underexposure. The standard DS screen and standard KatzEye screen are very similar in scatter characteristic so produce on-calibration results for the DS metering sensors, but the K10D's metering sensors are expecting less light. The OptiBrite treatment does a similar thing: it tunes the Katz Eye screen's scatter to direct more light at the eye piece which will have the result of reducing the light going to the metering sensors, with a result that the DS calibration curve adds exposure to compensate resulting in overexposure. So the conjecture is that the Katz Eye OptiBrite screen would produce closer to calibration target results more similar to the K10D OEM screen. But of course I'd have to buy one to test this theory out ... and since the advantage I'm looking at is really very small, given the quality of the K10D's OEM screen, I elected not to and will just use the standard screen or Pentax replacement with the reticle crosshairs. The OptiBrite treatment raises screen brightness with a small decrease in focusing surface contrast. Whether that's what you want or not depends upon how you intend to use your camera. I wanted a better surface for manual focusing, that's why I elected not to buy it when I ordered the screen for the DS. Most people buying the Katz Eye screens are buying them to use the optical focusing aids and screen contrast is less important, they just want it bright. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO: Female Cormorant
Couple of issues - the image is a little large to be viewed without scrolling. This takes away from the impact. You might consider a smaller image size or offer multiple image sizes. Also, it seems rather grainy - something that could be fixed perhaps. Lastly, it seems overexposed. The white on it's head seems blown out and the overall rendering just looks washed out. If you could take a crack at those issues and then repost, I think we could talk about the photographic values of it - rather than the processing aspects. I'll give it a go and repost tomorrow, thanks for the constructive critique. I'm not sure I can do much more with the grainy look but size and exposure shouldn't present a problem. John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Vista and Microsoft Photo Info have problems with metadata ?
http://news.com.com/2061-10805_3-6157801.html?part=rsstag=2547-1_3-0-5subj=news Thought you should know before deciding upon a Vista upgrade or using the said tool. And no, I don't post this to show Microsoft in a bad way ... -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Paw Closed for the season
http://www.photo.net/photodb/photo?photo_id=5582000 Played hooky on Thursday. Wondered around parts of the Tent canal systemafter a snow fall. Pretty deep snow and i forgot my snow pants, so i shot a few from the road. This one seems to fit the title. K10D, 16-45 F4, proccessed in Lightroom Beta and saved for web. Did this on the laptop , so it might be off a tad. Comments welcome. Dave -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
On 2/11/07 12:18 PM, P. J. Alling, [EMAIL PROTECTED] wrote: You have more faith in the perfectibility of LCD's than I do. Yes, I do. New EVFs are already in existence in several incarnations, including the use of organic LED. It is a matter of who have courage to get out of the mold first. But I would not be interested in them unless it has acceptable resolution and fast enough refreshing rate. I am sure and it's industry's prediction that perfect EVF will come sooner than later, whether we like it or not. BTW, Oly are said to have developed a dual viewfinder (optical and EVF). Let's ee how things will change and evolve :-). Ken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Does this qualify me for...
Maybe I should take the cape get it chromed. That would be a super idea, man. Har! I was waiting for something like that. It would be great for a crusader such as yourself Crusader? Not me mate. Anyway, as an idea it's super, hero that you are with these things Good god, I feel dense right at the moment, about 7850kg/m^3. I totally marvel at you man. -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Calibrated my monitor, soon to load the 2400 and questions.
In a message dated 2/11/2007 8:29:12 A.M. Pacific Standard Time, [EMAIL PROTECTED] writes: Monitor seems to have a very slight magenta feel to itbut it could be that i'm looking at colours as they should be.I was having trouble keping the unit stuck to the screen, so i rested my finger on the back, ever so lightly. It didi slip down a tiny bit, but never left the glass. Am i ok here.? Dave == Yes, no prob. The stickers don't matter, just the optical reader (or whatever one calls it) on the inside in the middle. As long as the room you were doing it in was as completely dark as possible. I now have an LCD monitor, but when I was using my CRT (still have it), I thought it left me with a slight red cast. It may be my eyes :-), but the Adobe color space seems to have more red in it than I personally like on screen. (Sometimes I'd tone it down and sometimes I wouldn't.) Interestingly, I am getting the best prints by using NO color management (with Adobe or Epson). The prints match my screen most closely, which is what I want. I use the Epson paper profiles, naturally, and in the advanced part of the Epson printing dialog, I choose sRBG as input which matches it to the screen input. Ergo, my prints are now coming out closer to the screen than ever before. This, BTW, is directly contradictory to what most people will tell you. But good screen calibration first does help so that the input is as correct as you can get it -- and getting the gamma right is important. (Waiting to see if G. or someone jumps all over me, but I never liked the look of the Adobe color space when I was editing photos -- it has always looked too red to me.) HTH, Marnie aka Doe (I have an extremely good color sense though, I probably should mention that.) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: AAIP (Another Annsan-Inspired Photograph)
In a message dated 2/11/2007 5:01:20 A.M. Pacific Standard Time, [EMAIL PROTECTED] writes: On 2/10/07, Mark Roberts [EMAIL PROTECTED] wrote: I go past this every week and finally decided to grab a photo. I need to go back when the light is better, but you'll get the gist from this... http://www.robertstech.com/temp/aaip.jpg -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net === Not there. Marnie aka Doe :-) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Vista and Microsoft Photo Info have problems with metadata ?
Sadly I will have to have at least one machine running Vista. I can stay away from XP, it's still enough like W2K for me to do most of my work. But Vista is the future... Unfortunately. Thibouille wrote: http://news.com.com/2061-10805_3-6157801.html?part=rsstag=2547-1_3-0-5subj=news Thought you should know before deciding upon a Vista upgrade or using the said tool. And no, I don't post this to show Microsoft in a bad way ... -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Three new Pentax DA star lenses: any knowledge?
On 2/11/07 12:24 PM, K.Takeshita, [EMAIL PROTECTED] wrote: But I would not be interested in them unless it has acceptable resolution and fast enough refreshing rate. But I am a type of guy who has much less resistance to try out something new as long as it makes sense and contributes to what I like, such as better user interface, more compact design and better image quality etc. In fact, I want to see someone like Oly and/or Pentax and even Pana/Sony to exercise more imaginations and keep C/N honest :-). Ken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Calibrated my monitor, soon to load the 2400 and questions.
The printer looks like it comes with a small trial of the enhance matte to try. I'll be using Epson papers. I use the Epson Glossy and will add the better glossy to the workflow. I suppose the built in profiles for the three types of paper will suffice. Dave On 2/11/07, Godfrey DiGiorgi [EMAIL PROTECTED] wrote: I don't use Windows enough to comment on the screen calibration and configuraiton setup for that environment. On Feb 11, 2007, at 8:28 AM, David J Brooks wrote: ... Now, i'll be setting up the 2400asap. Should i expect the priints to look like they do on the monitor now. Before with my uncal monitor and the S800, they were close, but i can see difference's in shade of grass etc.The colours shifted close to screen after they dried about an hour or so. Should i see the same with the 2400?? Presuming you use a profiled printing workflow and have a good profile for the paper you're using, prints should match your screen to within a very small range of deviation after dry down. Depending upon what I'm printing, dry down can take an hour or a day: BWs with lots of deep tones and color prints with lots of highly saturated colors load the paper with a lot of ink, they take the longest to dry down. (Note that I use only Matte surface papers. Glossy papers might be different ...) I find profiles included with the R2400 for Epson Enhanced Matte and Velvet Fine Art papers are superb, they work beautifully with a profiled workflow when printing from both Photoshop CS2 and Lightroom v4.1 beta. The ones supplied for Moab Kayenta and Hahnemühle Fine Art Photo Rag are not as accurate, I've gotten better results with both going to the print driver's Advanced Color/BW Controls. I suspect that if I want to use them a lot, I'll need to have custom profiles made up or get a print profiling package. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Vista and Microsoft Photo Info have problems with metadata ?
- Original Message - From: Thibouille Subject: Vista and Microsoft Photo Info have problems with metadata ? http://news.com.com/2061-10805_3-6157801.html?part=rsstag=2547-1_3-0-5subj=news Thought you should know before deciding upon a Vista upgrade or using the said tool. And no, I don't post this to show Microsoft in a bad way ... Good info, thanks for posting it. This is much more useful than the general onslaught of knee jerk Microsoft bashing that serves no purpose other than to annoy people who are using the product. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO: Female Cormorant
Couple of issues - the image is a little large to be viewed without scrolling. This takes away from the impact. You might consider a smaller image size or offer multiple image sizes. Also, it seems rather grainy - something that could be fixed perhaps. Lastly, it seems overexposed. The white on it's head seems blown out and the overall rendering just looks washed out. Hi Bruce Slight edit, better? John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO: Female Cormorant
Couple of issues - the image is a little large to be viewed without scrolling. This takes away from the impact. You might consider a smaller image size or offer multiple image sizes. Also, it seems rather grainy - something that could be fixed perhaps. Lastly, it seems overexposed. The white on it's head seems blown out and the overall rendering just looks washed out. Hi Bruce Slight edit, better? http://www.photo.net/photodb/photo?photo_id=5582064 John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Calibrated my monitor, soon to load the 2400 and questions.
On 2/11/07, Mat Maessen [EMAIL PROTECTED] wrote: On 2/11/07, David J Brooks [EMAIL PROTECTED] wrote: Well i finally got around to loading Optical and doinga calabration on my 5 year old, 17, CRT. I have an 8-year-old CRT that calibrates quite nicely still. :-) It took a bit to find the sensor, i finally chose spyderusb and that seemed to open the buttons so i could actually click on the calibrate button. Hope that was the right one Mark R.:-) I'm not Mark R., but if you're using a Colorvision Spyder, that sounds correct. I picked it up from Mark, so that was directed to him, if he saw it first, but thanks a bunch for the answers Matt. I did it as instructed to do, and it made a profile called default monitor2-11-07 and stored it in window/system32 etc etc. Now. Is this loaded each time i start up or do i have to load it my self. There should be an application running at startup, called either OptiCal or PhotoCal. You may only see it blink on the screen briefly. But that's what's setting the correct settings on your video card to keep the monitor calibrated. I;ll watch and see what happens (The term monitor calibration is kind of a misnomer. Really, you're calibrating the monitor, and the video card together.) Monitor seems to have a very slight magenta feel to itbut it could be that i'm looking at colours as they should be.I was having trouble keping the unit stuck to the screen, so i rested my finger on the back, ever so lightly. It didi slip down a tiny bit, but never left the glass. Am i ok here.? I think you're okay there. Remember to clean the glass of the CRT before trying to stick the Spyder to it. It doesn't stick well to dirt and dust. :-) Gott ya. I did give it a small wipe down, but not good enought it looks like. Yes i used 6500K The default color settings of most monitors are somewhat blue (9300K color temp), so if you calibrated to 6500K, it'll look a little magenta until you get used to it. Now, i'll be setting up the 2400asap. Should i expect the priints to look like they do on the monitor now. If you do it right, they'll be very close. I'm not sure what version of Photoshop you have, but I know CS and CS2 have a Proofing view, that will simulate the effect of the paper and printer combination. Just make sure you have ICC profiles loaded for the printer/paper combination you're using. If you're using the Epson papers, the profiles should already be there. Anyone else's, you'll have to get them from the paper manufacturer. I;ll stick to Epsons for the time being until i get a feel for the printer. I use CS on the laptop and CS2 on the PC. Before with my uncal monitor and the S800, they were close, but i can see difference's in shade of grass etc.The colours shifted close to screen after they dried about an hour or so. Should i see the same with the 2400?? You may see some color shifts in the highlights or the shadows, but it's no worse than what you get with real photographic prints, in my experience. One of the big things I gained when I got things calibrated right and started printing with ICC profiles, was a LOT more shadow detail apparent in the prints. The default settings were printing the darks too dark and muddy. I;ll watch for that, thanks Dave Good luck! -Mat -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Equine Photography www.caughtinmotion.com Ontario Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO - river cruisers
In a message dated 2/9/2007 3:38:15 P.M. Pacific Standard Time, [EMAIL PROTECTED] writes: Taken on my morning walk: the cruisers are moored overnight underneath a large road bridge (cropped out to avoid distractions!). http://www.members.iinet.net.au/[EMAIL PROTECTED]/PESO001.html Technical details on the page. Comments always welcome (but note that I think the resize-for-web result sucks!) John Coyle Brisbane, Australia = That's very nice. A closer shot would be great too. But fine as is. Marnie aka Doe :-) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Today's heresy
Cotty wrote: On 11/2/07, Adam Maas, discombobulated, unleashed: Say goodbye to infinity focus. The reason that FD stuff is cheap is that the register on FD is short (~42mm) and it won't reach infinity focus without optics on any DSLR mount other than 4/3rds. Okay, I'll pick up a cheap FD and get cracking. You'll need to top this: http://flickr.com/photos/rodolfonovak/229655951/in/set-72157594260872348/ FD-EOS conversion with hot glue electrical tape. It works with infinity focus, just only wide open. -Adam -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Vista and Microsoft Photo Info have problems with metadata ?
On 11/2/07, William Robb, discombobulated, unleashed: This is much more useful than the general onslaught of knee jerk Microsoft bashing that serves no purpose other than to annoy people who are using the product. I don't have a problem with that. -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: PESO: Female Cormorant
In a message dated 2/11/2007 9:42:56 A.M. Pacific Standard Time, [EMAIL PROTECTED] writes: Couple of issues - the image is a little large to be viewed without scrolling. This takes away from the impact. You might consider a smaller image size or offer multiple image sizes. Also, it seems rather grainy - something that could be fixed perhaps. Lastly, it seems overexposed. The white on it's head seems blown out and the overall rendering just looks washed out. Hi Bruce Slight edit, better? http://www.photo.net/photodb/photo?photo_id=5582064 John === Didn't see the first, but not bad at all. Head looks a tad oversharpened, but I may be unclear on what the white specks are. Nice shot. Like the stuff it is sitting on. Marnie aka Doe :-) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
