Re: Pentax 1.4x converter
On Feb 5, 2014, at 21:04 , John Francis wrote: > I look forward to finding out how well the new TC performs with all three > of my DA* zooms. I was pleasantly surprised to see that it is claimed to > work with lenses with a maximum aperture of f/4; that bodes well for the > 60-250. I wonder what it would do on the back of the 250-600? I would think in this age of digital everything that Ricoh would have incorporated auto ISO that raised your ISO when the 1.4x is attached so the image as seen by the camera and in the LCD would remain fairly constant. Pipe dreaming again Joe?? For $600 I would expect to see some sort of built in image intensification within the 1.4x instead of just upping the ISO. No? :) Joseph McAllister pentax...@mac.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Feb 2, 2014, at 09:18 , Mark Roberts wrote: > Joseph McAllister wrote: > >> Definitely not a Pentax product shot, beta or whatever. > > In about two weeks we'll find out for certain. I'm pretty sure you're > wrong :) The image as announced by Pentax had a correction (more PS?) that allowed the lens barrel to show above the label. The earlier shots displayed in 'rumors' etc showed the label rising in it's center to almost obscure the barrel in the center. Threw off the perspective. Ultimately, time almost always proves me wrong, or mis-informed. It's a burden, but not a curse. :) Joseph McAllister pentax...@mac.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Rob Studdert wrote: >The Canon Lens EF 1.4X III Extender retails (from a shop that doesn't >deep discount) at AU$529 inc 10% GST or about US$475 Yep. That Canon teleconverter sells for $499 at B&H Photo. I expect real-world pricing of the Pentax to be right about there. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Wed, Feb 05, 2014 at 07:59:51PM -0500, Stanley Halpin wrote: > > On Feb 5, 2014, at 7:45 PM, J.C. O'Connell wrote: > > > Zooms and TCs are not a good mix. > > > > Well, we shall see if that is still true. I found my 80-200 performed adequately with either the AF1.7x or a 1.4 TC. I look forward to finding out how well the new TC performs with all three of my DA* zooms. I was pleasantly surprised to see that it is claimed to work with lenses with a maximum aperture of f/4; that bodes well for the 60-250. I wonder what it would do on the back of the 250-600? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I have the A-1.4X-S, X-L and the 2.0X-L and I didn't pay anything near $600 new for any of them ! Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "Miserere" Subject: Re: Pentax 1.4x converter Really Mark? You expected it to be more expensive still? Jeez, I thought $600 for a 1.4x TC was eye gouging enough already. Cheers, --M. \/\/o/\/\ --> http://WorldOfMiserere.com http://EnticingTheLight.com A Quest for Photographic Enlightenment On 5 February 2014 18:32, Mark Roberts wrote: Bruce Walker wrote: So now we know: $599.95 PR from Ricoh quoted by dpreview contradicts some of asahi man's info. Won't work with cameras older than K-7. Cameras will need firmware update. http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter That explains the firmware update that just came out, doesn't it? Price is around what I expected. perhaps even a little lower than I expected. Hope it's good! -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
The Canon Lens EF 1.4X III Extender retails (from a shop that doesn't deep discount) at AU$529 inc 10% GST or about US$475 On 6 February 2014 14:33, Mark Roberts wrote: > Rob Studdert wrote: > >>On 6 February 2014 11:54, Miserere wrote: >>> Really Mark? You expected it to be more expensive still? Jeez, I >>> thought $600 for a 1.4x TC was eye gouging enough already. >>> >>I have to agree, $600 is pretty rich but so are most of Pentax's glass >>offerings, I guess that's why I tend towards Sigma now. > > $600 is right around the price of the Canon equivalent. I thought it > might be a little pricier. To do a teleconverter *right* (especially > in this age of pixel peeping) can't be cheap. > > > > -- > Mark Roberts - Photography & Multimedia > www.robertstech.com > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Rob Studdert (Digital Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Rob Studdert wrote: >On 6 February 2014 11:54, Miserere wrote: >> Really Mark? You expected it to be more expensive still? Jeez, I >> thought $600 for a 1.4x TC was eye gouging enough already. >> >I have to agree, $600 is pretty rich but so are most of Pentax's glass >offerings, I guess that's why I tend towards Sigma now. $600 is right around the price of the Canon equivalent. I thought it might be a little pricier. To do a teleconverter *right* (especially in this age of pixel peeping) can't be cheap. -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I have to agree, $600 is pretty rich but so are most of Pentax's glass offerings, I guess that's why I tend towards Sigma now. On 6 February 2014 11:54, Miserere wrote: > Really Mark? You expected it to be more expensive still? Jeez, I > thought $600 for a 1.4x TC was eye gouging enough already. > > Cheers, > > >--M. > > \/\/o/\/\ --> http://WorldOfMiserere.com > > http://EnticingTheLight.com > A Quest for Photographic Enlightenment > > > > On 5 February 2014 18:32, Mark Roberts wrote: >> Bruce Walker wrote: >> >>>So now we know: $599.95 >>> >>>PR from Ricoh quoted by dpreview contradicts some of asahi man's info. >>>Won't work with cameras older than K-7. Cameras will need firmware >>>update. >>> >>>http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter >> >> That explains the firmware update that just came out, doesn't it? >> >> Price is around what I expected. perhaps even a little lower than I >> expected. Hope it's good! >> >> -- >> Mark Roberts - Photography & Multimedia >> www.robertstech.com >> >> >> >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Rob Studdert (Digital Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Too many elements increases flare, lowers contrast, and lowers resolution. TCs work better with good primes. On 2/5/2014 7:59 PM, Stanley Halpin wrote: On Feb 5, 2014, at 7:45 PM, J.C. O'Connell wrote: Zooms and TCs are not a good mix. Well, we shall see if that is still true. stan On 2/5/2014 6:41 PM, Bruce wrote: I didn't see the DA* 50-135 listed for either compatible or incompatible. Did I miss it somehow?? -- Bruce Sent from my iPad On Feb 5, 2014, at 3:32 PM, Mark Roberts wrote: Bruce Walker wrote: So now we know: $599.95 PR from Ricoh quoted by dpreview contradicts some of asahi man's info. Won't work with cameras older than K-7. Cameras will need firmware update. http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter That explains the firmware update that just came out, doesn't it? Price is around what I expected. perhaps even a little lower than I expected. Hope it's good! -- Mark Roberts - Photography & Multimedia www.robertstech.com -- J.C. O'Connell hifis...@gate.net -- -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
We'll see... I wouldn't be much surprised if it actually can be used also with older bodies, even film-eating ones. VBR, Margus On 6.02.2014 1:26, Bruce Walker wrote: So now we know: $599.95 PR from Ricoh quoted by dpreview contradicts some of asahi man's info. Won't work with cameras older than K-7. Cameras will need firmware update. http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter On Tue, Feb 4, 2014 at 10:25 PM, Darren Addy wrote: Additional converter details today from "asahi man": "TC is ready and works perfect,good quality,needs no firmware update,cause all IDs are in the TC." "Works with "all Pentax cams". Source(s): http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53048033 http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53048808 http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53049630 On Sun, Feb 2, 2014 at 11:18 AM, Mark Roberts wrote: Joseph McAllister wrote: Definitely not a Pentax product shot, beta or whatever. In about two weeks we'll find out for certain. I'm pretty sure you're wrong :) -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Hey, you've still got one eye left... On 2/5/2014 7:54 PM, Miserere wrote: Really Mark? You expected it to be more expensive still? Jeez, I thought $600 for a 1.4x TC was eye gouging enough already. Cheers, --M. \/\/o/\/\ --> http://WorldOfMiserere.com http://EnticingTheLight.com A Quest for Photographic Enlightenment On 5 February 2014 18:32, Mark Roberts wrote: Bruce Walker wrote: So now we know: $599.95 PR from Ricoh quoted by dpreview contradicts some of asahi man's info. Won't work with cameras older than K-7. Cameras will need firmware update. http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter That explains the firmware update that just came out, doesn't it? Price is around what I expected. perhaps even a little lower than I expected. Hope it's good! -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- A newspaper is a device for making the ignorant more ignorant, and the crazy, crazier. - H.L.Mencken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Feb 5, 2014, at 7:45 PM, J.C. O'Connell wrote: > Zooms and TCs are not a good mix. > Well, we shall see if that is still true. stan > > On 2/5/2014 6:41 PM, Bruce wrote: >> I didn't see the DA* 50-135 listed for either compatible or incompatible. >> Did I miss it somehow?? >> >> -- >> Bruce >> >> >> Sent from my iPad >> >>> On Feb 5, 2014, at 3:32 PM, Mark Roberts wrote: >>> >>> Bruce Walker wrote: >>> So now we know: $599.95 PR from Ricoh quoted by dpreview contradicts some of asahi man's info. Won't work with cameras older than K-7. Cameras will need firmware update. http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter >>> That explains the firmware update that just came out, doesn't it? >>> >>> Price is around what I expected. perhaps even a little lower than I >>> expected. Hope it's good! >>> >>> -- >>> Mark Roberts - Photography & Multimedia >>> www.robertstech.com >>> -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Really Mark? You expected it to be more expensive still? Jeez, I thought $600 for a 1.4x TC was eye gouging enough already. Cheers, --M. \/\/o/\/\ --> http://WorldOfMiserere.com http://EnticingTheLight.com A Quest for Photographic Enlightenment On 5 February 2014 18:32, Mark Roberts wrote: > Bruce Walker wrote: > >>So now we know: $599.95 >> >>PR from Ricoh quoted by dpreview contradicts some of asahi man's info. >>Won't work with cameras older than K-7. Cameras will need firmware >>update. >> >>http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter > > That explains the firmware update that just came out, doesn't it? > > Price is around what I expected. perhaps even a little lower than I > expected. Hope it's good! > > -- > Mark Roberts - Photography & Multimedia > www.robertstech.com > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Zooms and TCs are not a good mix. On 2/5/2014 6:41 PM, Bruce wrote: I didn't see the DA* 50-135 listed for either compatible or incompatible. Did I miss it somehow?? -- Bruce Sent from my iPad On Feb 5, 2014, at 3:32 PM, Mark Roberts wrote: Bruce Walker wrote: So now we know: $599.95 PR from Ricoh quoted by dpreview contradicts some of asahi man's info. Won't work with cameras older than K-7. Cameras will need firmware update. http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter That explains the firmware update that just came out, doesn't it? Price is around what I expected. perhaps even a little lower than I expected. Hope it's good! -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- J.C. O'Connell hifis...@gate.net -- -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I’m in. On Feb 5, 2014, at 6:32 PM, Mark Roberts wrote: > Bruce Walker wrote: > >> So now we know: $599.95 >> >> PR from Ricoh quoted by dpreview contradicts some of asahi man's info. >> Won't work with cameras older than K-7. Cameras will need firmware >> update. >> >> http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter > > That explains the firmware update that just came out, doesn't it? > > Price is around what I expected. perhaps even a little lower than I > expected. Hope it's good! > > -- > Mark Roberts - Photography & Multimedia > www.robertstech.com > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Bruce wrote: >I didn't see the DA* 50-135 listed for either compatible or incompatible. Did >I miss it somehow?? It's listed. 5th one down. >>> http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I didn't see the DA* 50-135 listed for either compatible or incompatible. Did I miss it somehow?? -- Bruce Sent from my iPad > On Feb 5, 2014, at 3:32 PM, Mark Roberts wrote: > > Bruce Walker wrote: > >> So now we know: $599.95 >> >> PR from Ricoh quoted by dpreview contradicts some of asahi man's info. >> Won't work with cameras older than K-7. Cameras will need firmware >> update. >> >> http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter > > That explains the firmware update that just came out, doesn't it? > > Price is around what I expected. perhaps even a little lower than I > expected. Hope it's good! > > -- > Mark Roberts - Photography & Multimedia > www.robertstech.com > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Bruce Walker wrote: >So now we know: $599.95 > >PR from Ricoh quoted by dpreview contradicts some of asahi man's info. >Won't work with cameras older than K-7. Cameras will need firmware >update. > >http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter That explains the firmware update that just came out, doesn't it? Price is around what I expected. perhaps even a little lower than I expected. Hope it's good! -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
So now we know: $599.95 PR from Ricoh quoted by dpreview contradicts some of asahi man's info. Won't work with cameras older than K-7. Cameras will need firmware update. http://www.dpreview.com/news/2014/02/05/ricoh-announces-hd-pentax-da-af-1-4x-aw-rear-converter On Tue, Feb 4, 2014 at 10:25 PM, Darren Addy wrote: > Additional converter details today from "asahi man": > "TC is ready and works perfect,good quality,needs no firmware > update,cause all IDs are in the TC." > "Works with "all Pentax cams". > > Source(s): > http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53048033 > http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53048808 > http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53049630 > > > > On Sun, Feb 2, 2014 at 11:18 AM, Mark Roberts > wrote: >> Joseph McAllister wrote: >> >>>Definitely not a Pentax product shot, beta or whatever. >> >> In about two weeks we'll find out for certain. I'm pretty sure you're >> wrong :) >> >> >> -- >> Mark Roberts - Photography & Multimedia >> www.robertstech.com >> >> >> >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > Photographers must learn not to be ashamed to have their photographs > look like photographs. > ~ Alfred Stieglitz > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- -bmw -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Additional converter details today from "asahi man": "TC is ready and works perfect,good quality,needs no firmware update,cause all IDs are in the TC." "Works with "all Pentax cams". Source(s): http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53048033 http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53048808 http://www.dpreview.com/forums/thread/3618741?page=2#forum-post-53049630 On Sun, Feb 2, 2014 at 11:18 AM, Mark Roberts wrote: > Joseph McAllister wrote: > >>Definitely not a Pentax product shot, beta or whatever. > > In about two weeks we'll find out for certain. I'm pretty sure you're > wrong :) > > > -- > Mark Roberts - Photography & Multimedia > www.robertstech.com > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Joseph McAllister wrote: >Definitely not a Pentax product shot, beta or whatever. In about two weeks we'll find out for certain. I'm pretty sure you're wrong :) -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Jan 27, 2014, at 12:42 , steve harley wrote: > on 2014-01-27 12:20 Mark Roberts wrote >> I think the text on the barrel was Photoshopped in but I think it's a >> genuine Pentax product shot done from a pre-production prototype. > > i think the whole thing is a fake; every detail of mount surface has > highlights indicating a light source to the left, but the black body has a > highlight from a light source to the right; what shows of the bayonet has two > highlights … > > at the lower edge of metal mount surface, there is an area just left of > center where the bright "metal" is out of round and blurred, making the black > ring next to the mount surface narrower … > > the text curves such that the right side of each line is lower than the left, > and this is more pronounced on the lower line It's not only the text, but the piece of material (or PS layer) holding the text has a different radius than the converter, matching up with the converter in the center, but almost bisecting the vertical lip of the top at it's end points. Definitely not a Pentax product shot, beta or whatever. Like others have said, I can wait, I can't afford, and I have the Tamron 1.4 and 2.0x converters for PZ-1p, plus the 2.0 A Pentax unit. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I just tried my DA 16-45 with a Sigma 1.4 AF teleconverter on a Pz-1p. There is little light falloff visible in the viewfinder and any focal lengeth, though I don't think I can reach a conclusion based on that. I don't trust my eyes to see a couple EV in light drop off, which would be pretty obvious (though correctable) in a digital or film exposure. I'll try running a roll of film through the camera iwth TC and DA lens combo to get a real sense of how it works. I was surprised that the Pz-1p AF wored ont he DA lens with the 1.4x converter, since it is not so hot even on lenses without a converter... Mark On 1/27/2014 3:38 PM, Darren Addy wrote: Someone suggests taking any 1.4x teleconverter and putting one of the problematic (non-full-frame-covering) DA lenses on a full frame Pentax film camera and seeing what it looks like. So I just took a DA 16-45mm and stuck it on a ME body. Vignettes hard at the corners at 16mm. Then I put a Rear Converter K T6-2x on it and checked again. No vignetting at 16mm (though now it is a 32-90mm), I don't have a 1.4x to test here at work with me, but I'm pretty sure that would allow it to cover the corners at 24-63mm also. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On 1/28/2014 2:17 PM, P.J. Alling wrote: On 1/28/2014 9:45 AM, Bruce Walker wrote: On Tue, Jan 28, 2014 at 2:55 AM, Larry Colen wrote: On Tue, Jan 28, 2014 at 12:40:19AM -0500, Ken Waller wrote: - Original Message - From: "Bruce Walker" Subject: Re: Pentax 1.4x converter On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker wrote: Ah shit. So Hoya fired the guy who created my fave lens, the DA* 55/1.4. Unbelievable. What a bunch of maroons. He probably didn't want to do endoscopes. That's just an innuendo. Its also a slippery slope Will these endoscope jokes ever be behind us? We have not touched bottom. We've rectum this time. I'm sorry that last one was execrable. -- A newspaper is a device for making the ignorant more ignorant, and the crazy, crazier. - H.L.Mencken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
> Ah shit. So Hoya fired the guy who created my fave lens, the DA* > 55/1.4. Unbelievable. What a bunch of maroons. He probably didn't want to do endoscopes. >>> That's just an innuendo. >> Its also a slippery slope > Will these endoscope jokes ever be behind us? We have not touched bottom. >>> We've rectum this time. >> >>Oh crap, I think its time to eliminate this thread. > >Larry's commented on it so it's already been through the colen. Couldn't be a void ed. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
"Ken Waller" wrote: >> On 1/28/2014 9:45 AM, Bruce Walker wrote: >>> On Tue, Jan 28, 2014 at 2:55 AM, Larry Colen wrote: >>>> On Tue, Jan 28, 2014 at 12:40:19AM -0500, Ken Waller wrote: >>>>> - Original Message - From: "Bruce Walker" >>>>> >>>>> Subject: Re: Pentax 1.4x converter >>>>> >>>>>> On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: >>>>>>> On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker >>>>>>> wrote: >>>>>>> >>>>>>>> Ah shit. So Hoya fired the guy who created my fave lens, the DA* >>>>>>>> 55/1.4. Unbelievable. What a bunch of maroons. >>>>>>> He probably didn't want to do endoscopes. >>>>>> That's just an innuendo. >>>>> Its also a slippery slope >>>> Will these endoscope jokes ever be behind us? >>> We have not touched bottom. >>> >> We've rectum this time. > >Oh crap, I think its time to eliminate this thread. Larry's commented on it so it's already been through the colen. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "P.J. Alling" Subject: Re: Pentax 1.4x converter On 1/28/2014 9:45 AM, Bruce Walker wrote: On Tue, Jan 28, 2014 at 2:55 AM, Larry Colen wrote: On Tue, Jan 28, 2014 at 12:40:19AM -0500, Ken Waller wrote: - Original Message - From: "Bruce Walker" Subject: Re: Pentax 1.4x converter On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker wrote: Ah shit. So Hoya fired the guy who created my fave lens, the DA* 55/1.4. Unbelievable. What a bunch of maroons. He probably didn't want to do endoscopes. That's just an innuendo. Its also a slippery slope Will these endoscope jokes ever be behind us? We have not touched bottom. We've rectum this time. Oh crap, I think its time to eliminate this thread. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
These jokes could have been funny but this list just wrecked em. Rectum, hell it dam near kills them. Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "Larry Colen" Subject: Re: Pentax 1.4x converter These jokes could have been funny but this list just wrecked em. On January 28, 2014 7:53:03 AM PST, Paul Stenquist wrote: On Jan 28, 2014, at 10:28 AM, Godfrey DiGiorgi wrote: He probably didn't want to do endoscopes. That's just an innuendo. Its also a slippery slope Will these endoscope jokes ever be behind us? We have not touched bottom. I think you've put your finger on it. Hmm. That must be the end. I expect the topic to be probed more deeply. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
He also indicates there are considerable electronics inside the converter which will necessitate firmware updates for cameras to be able to sue it. So that will sounds like it will prevent full feature usage on non digital camera bodies. Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "Mark Roberts" Subject: Re: Pentax 1.4x converter New information: Asahi Man says the new teleconverter is an update of one designed under Hoya (in 2008) but never put into production. He also indicates there are considerable electronics inside the converter which will necessitate firmware updates for cameras to be able to sue it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On 1/28/2014 9:45 AM, Bruce Walker wrote: On Tue, Jan 28, 2014 at 2:55 AM, Larry Colen wrote: On Tue, Jan 28, 2014 at 12:40:19AM -0500, Ken Waller wrote: - Original Message - From: "Bruce Walker" Subject: Re: Pentax 1.4x converter On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker wrote: Ah shit. So Hoya fired the guy who created my fave lens, the DA* 55/1.4. Unbelievable. What a bunch of maroons. He probably didn't want to do endoscopes. That's just an innuendo. Its also a slippery slope Will these endoscope jokes ever be behind us? We have not touched bottom. We've rectum this time. -- A newspaper is a device for making the ignorant more ignorant, and the crazy, crazier. - H.L.Mencken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On 1/28/2014 9:24 AM, Mark Roberts wrote: New information: Asahi Man says the new teleconverter is an update of one designed under Hoya (in 2008) but never put into production. He also indicates there are considerable electronics inside the converter which will necessitate firmware updates for cameras to be able to sue it. Hope it's got a good lawyer then. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
These jokes could have been funny but this list just wrecked em. On January 28, 2014 7:53:03 AM PST, Paul Stenquist wrote: > >On Jan 28, 2014, at 10:28 AM, Godfrey DiGiorgi >wrote: > >> He probably didn't want to do endoscopes. >>> >>> That's just an innuendo. >> >> Its also a slippery slope > > Will these endoscope jokes ever be behind us? We have not touched bottom. >>> I think you've put your finger on it. >> >> Hmm. That must be the end. > >I expect the topic to be probed more deeply. >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above >and follow the directions. -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Remind me never to be the butt of your jokes. On Tue, Jan 28, 2014 at 9:28 AM, Godfrey DiGiorgi wrote: > >>> He probably didn't want to do endoscopes. >> >> That's just an innuendo. > > Its also a slippery slope Will these endoscope jokes ever be behind us? >>> >>> We have not touched bottom. >>> >> I think you've put your finger on it. > > Hmm. That must be the end. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Jan 28, 2014, at 10:28 AM, Godfrey DiGiorgi wrote: > >>> He probably didn't want to do endoscopes. >> >> That's just an innuendo. > > Its also a slippery slope Will these endoscope jokes ever be behind us? >>> >>> We have not touched bottom. >>> >> I think you've put your finger on it. > > Hmm. That must be the end. I expect the topic to be probed more deeply. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
>> He probably didn't want to do endoscopes. > > That's just an innuendo. Its also a slippery slope >>> >>> Will these endoscope jokes ever be behind us? >> >> We have not touched bottom. >> > I think you've put your finger on it. Hmm. That must be the end. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
>>> >>He probably didn't want to do endoscopes. >>> > >>> >That's just an innuendo. >>> >>> Its also a slippery slope >> >> Will these endoscope jokes ever be behind us? > >We have not touched bottom. > I think you've put your finger on it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Tue, Jan 28, 2014 at 2:55 AM, Larry Colen wrote: > On Tue, Jan 28, 2014 at 12:40:19AM -0500, Ken Waller wrote: >> >> - Original Message - From: "Bruce Walker" >> >> Subject: Re: Pentax 1.4x converter >> >> >On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: >> >>On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker >> >> wrote: >> >> >> >>>Ah shit. So Hoya fired the guy who created my fave lens, the DA* >> >>>55/1.4. Unbelievable. What a bunch of maroons. >> >> >> >>He probably didn't want to do endoscopes. >> > >> >That's just an innuendo. >> >> Its also a slippery slope > > Will these endoscope jokes ever be behind us? We have not touched bottom. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
New information: Asahi Man says the new teleconverter is an update of one designed under Hoya (in 2008) but never put into production. He also indicates there are considerable electronics inside the converter which will necessitate firmware updates for cameras to be able to sue it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Tue, Jan 28, 2014 at 12:40:19AM -0500, Ken Waller wrote: > > Kenneth Waller > http://www.pentaxphotogallery.com/kennethwaller > > - Original Message - From: "Bruce Walker" > > Subject: Re: Pentax 1.4x converter > > > >On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: > >>On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker > >> wrote: > >> > >>>Ah shit. So Hoya fired the guy who created my fave lens, the DA* > >>>55/1.4. Unbelievable. What a bunch of maroons. > >> > >>He probably didn't want to do endoscopes. > > > >That's just an innuendo. > > > > Its also a slippery slope Will these endoscope jokes ever be behind us? -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "Bruce Walker" Subject: Re: Pentax 1.4x converter On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker wrote: Ah shit. So Hoya fired the guy who created my fave lens, the DA* 55/1.4. Unbelievable. What a bunch of maroons. He probably didn't want to do endoscopes. That's just an innuendo. Its also a slippery slope -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I hope this 1.4x does not act as a pseudo-adapter. Canon did that way back with their early DSLRs. Did not go over very well, though their adaptation was handled than what is talked about here. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Mon, Jan 27, 2014 at 4:55 PM, Matthew Hunt wrote: > On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker wrote: > >> Ah shit. So Hoya fired the guy who created my fave lens, the DA* >> 55/1.4. Unbelievable. What a bunch of maroons. > > He probably didn't want to do endoscopes. That's just an innuendo. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Mon, Jan 27, 2014 at 3:28 PM, John wrote: > I expect it is "full-frame" in the sense that it would not vignette the > image from a "full-frame" lens. I don't see how it would make an APS-C > lens have a larger image circle. You can demonstrate it for yourself with a card held behind the lens (with and without the teleconverter). You will have to hold the aperture lever open with your finger to get enough light to see on the card. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Mon, Jan 27, 2014 at 4:52 PM, Bruce Walker wrote:
> Ah shit. So Hoya fired the guy who created my fave lens, the DA*
> 55/1.4. Unbelievable. What a bunch of maroons.
He probably didn't want to do endoscopes.
("The bokeh looks like shit!")
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Re: Pentax 1.4x converter
Ah shit. So Hoya fired the guy who created my fave lens, the DA* 55/1.4. Unbelievable. What a bunch of maroons. On Mon, Jan 27, 2014 at 4:13 PM, Darren Addy wrote: > Unrelated to the 1.4x, but I've been reviewing the recent posts of > Asahi Man on dpreview. He recently said this: > "Yes, Ricoh is the best for Pentax since a very long time.Hoya...Hoya > fired Jun Hirakawa...Anybody knows who Jun Hirakawa is?" > > Well I didn't, but I do now: http://camerapedia.wikia.com/wiki/Hirakawa_Jun > > Word is that he now works for Tamron and word is he was responsible > "for the SP 24-70mm F2.8 Di VC USD lens which was announced last year. > Sadly, there is no Pentax version for that." > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- -bmw -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Mon, Jan 27, 2014 at 4:28 PM, John wrote: > I expect it is "full-frame" in the sense that it would not vignette the > image from a "full-frame" lens. I don't see how it would make an APS-C > lens have a larger image circle. Enlarging the image is what teleconverters do. If it doesn't vignette on FF, then it will certainly enlarge an APS-C image circle to (about) FF size. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Edited here and there, for the sake of precision: Converting a focal length to a longer one can be seen like getting an image area and make it larger. So a tele-converted image MUST become larger than the original one projected by the lens alone. Then a DA-lens image + a 1.4x TC is enlarged more or less as much as needed by a 24x36mm image (unless it is vignetted by some hardware). Dario -Messaggio originale- From: John Sent: Monday, January 27, 2014 10:28 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter On 1/27/2014 3:21 PM, Matthew Hunt wrote: On Mon, Jan 27, 2014 at 3:17 PM, Dario Bonazza wrote: Great, but what's the point of spreading the same amount of light gathered by the same front lens on a larger sensor having say the same pixel count (e.g. 24 MP) while losing one stop for exposure? To smooth the transition for people with APS-C lenses, I suppose. (I don't know if it makes more sense than just cropping the middle portion of the FF sensor. I guess it depends on the FF pixel count, and whether a bigger but darker viewfinder image is better than a smaller, vignetted one.) I expect it is "full-frame" in the sense that it would not vignette the image from a "full-frame" lens. I don't see how it would make an APS-C lens have a larger image circle. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Converting a focal length to a longer one, can be seen like getting an image area and make it larger. So a tele-converted image MUST BECOME larger than the original one projected by the lens, hence a DA-lens image is necessarily enlarged, more or less as much as a 24x36mm needs (unless it is vignetted by some hardware). Dario -Messaggio originale- From: John Sent: Monday, January 27, 2014 10:28 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter On 1/27/2014 3:21 PM, Matthew Hunt wrote: On Mon, Jan 27, 2014 at 3:17 PM, Dario Bonazza wrote: Great, but what's the point of spreading the same amount of light gathered by the same front lens on a larger sensor having say the same pixel count (e.g. 24 MP) while losing one stop for exposure? To smooth the transition for people with APS-C lenses, I suppose. (I don't know if it makes more sense than just cropping the middle portion of the FF sensor. I guess it depends on the FF pixel count, and whether a bigger but darker viewfinder image is better than a smaller, vignetted one.) I expect it is "full-frame" in the sense that it would not vignette the image from a "full-frame" lens. I don't see how it would make an APS-C lens have a larger image circle. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On 1/27/2014 3:21 PM, Matthew Hunt wrote: On Mon, Jan 27, 2014 at 3:17 PM, Dario Bonazza wrote: Great, but what's the point of spreading the same amount of light gathered by the same front lens on a larger sensor having say the same pixel count (e.g. 24 MP) while losing one stop for exposure? To smooth the transition for people with APS-C lenses, I suppose. (I don't know if it makes more sense than just cropping the middle portion of the FF sensor. I guess it depends on the FF pixel count, and whether a bigger but darker viewfinder image is better than a smaller, vignetted one.) I expect it is "full-frame" in the sense that it would not vignette the image from a "full-frame" lens. I don't see how it would make an APS-C lens have a larger image circle. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Unrelated to the 1.4x, but I've been reviewing the recent posts of Asahi Man on dpreview. He recently said this: "Yes, Ricoh is the best for Pentax since a very long time.Hoya...Hoya fired Jun Hirakawa...Anybody knows who Jun Hirakawa is?" Well I didn't, but I do now: http://camerapedia.wikia.com/wiki/Hirakawa_Jun Word is that he now works for Tamron and word is he was responsible "for the SP 24-70mm F2.8 Di VC USD lens which was announced last year. Sadly, there is no Pentax version for that." -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
on 2014-01-27 13:53 Dario Bonazza wrote Don't you think such images supplied at the time of news releases can just be photo-realistic renderings? to produce images prior to production, i would think Ricoh would render from a 3D model rather than sloppily paste together a mount, a body and some text; if they were to paste it together, the skills to get it right are not that rare; but maybe it is a job left to an intern -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
The pure geometry would say yes, it would cover almost a 24x36mm sensor, if there is no vignetting. However I expect light fall off, (which is a somewhat different issue), to be a problem, it almost always is. On 1/27/2014 3:08 PM, Dario Bonazza wrote: In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence irrespectively of sensor size - and not an "equivalent to XY mm" on a given format. The question to be answered is whether such a combo of lens and TC will give an image circle covering 24x36mm format or not. Dario -Messaggio originale- From: Dario Bonazza Sent: Monday, January 27, 2014 9:04 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if any) you put behind it. In case the resulting image will be large enough to cover the 24x36mm format (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 lens. Dario -Messaggio originale- From: Alastair Robertson Sent: Monday, January 27, 2014 8:54 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have over 35mm frame more-or-less cancel out the 1.4x converter effect so that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x 1.4 = 12.7mm FOV on full frame? Alastair On 28 January 2014 08:42, Darren Addy wrote: On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts wrote: (which he says Pentax is calling a "Full Frame Converter") WUTT If this is true, is it possible that the converter will allow DA lenses (that don't quite cover full frame) to cover them adequately (albeit at 1.4x the focal length). This would be most beneficial to the faster DA lenses that don't cover full frame: DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full frame. DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 on full frame DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 on full frame -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- A newspaper is a device for making the ignorant more ignorant, and the crazy, crazier. - H.L.Mencken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I've been having that feeling for some time now, as the picts of latest Limited lenses look too perfect. And also consider the camera bodies offered in different colors: they are not the same camera model of a different color shot in a similar placement. They are in the same identical perspective, reflections and all. You could superimpose them perfectly. Suspect, to me. Dario -Messaggio originale- From: Dario Bonazza Sent: Monday, January 27, 2014 9:53 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter Don't you think such images supplied at the time of news releases can just be photo-realistic renderings? Dario -Messaggio originale- From: steve harley Sent: Monday, January 27, 2014 9:42 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter on 2014-01-27 12:20 Mark Roberts wrote I think the text on the barrel was Photoshopped in but I think it's a genuine Pentax product shot done from a pre-production prototype. i think the whole thing is a fake; every detail of mount surface has highlights indicating a light source to the left, but the black body has a highlight from a light source to the right; what shows of the bayonet has two highlights … at the lower edge of metal mount surface, there is an area just left of center where the bright "metal" is out of round and blurred, making the black ring next to the mount surface narrower … the text curves such that the right side of each line is lower than the left, and this is more pronounced on the lower line -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
on 2014-01-27 13:44 Darren Addy wrote I would think that also, except for the fact that Asahi Man is saying the things that he is saying. as poor Asahi Man's reputation is on the line, i will allow that the product may be real, but the image is a simulation -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Don't you think such images supplied at the time of news releases can just be photo-realistic renderings? Dario -Messaggio originale- From: steve harley Sent: Monday, January 27, 2014 9:42 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter on 2014-01-27 12:20 Mark Roberts wrote I think the text on the barrel was Photoshopped in but I think it's a genuine Pentax product shot done from a pre-production prototype. i think the whole thing is a fake; every detail of mount surface has highlights indicating a light source to the left, but the black body has a highlight from a light source to the right; what shows of the bayonet has two highlights … at the lower edge of metal mount surface, there is an area just left of center where the bright "metal" is out of round and blurred, making the black ring next to the mount surface narrower … the text curves such that the right side of each line is lower than the left, and this is more pronounced on the lower line -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I would think that also, except for the fact that Asahi Man is saying the things that he is saying. On Mon, Jan 27, 2014 at 2:42 PM, steve harley wrote: > on 2014-01-27 12:20 Mark Roberts wrote > >> I think the text on the barrel was Photoshopped in but I think it's a >> genuine Pentax product shot done from a pre-production prototype. > > > i think the whole thing is a fake; every detail of mount surface has > highlights indicating a light source to the left, but the black body has a > highlight from a light source to the right; what shows of the bayonet has > two highlights … > > at the lower edge of metal mount surface, there is an area just left of > center where the bright "metal" is out of round and blurred, making the > black ring next to the mount surface narrower … > > the text curves such that the right side of each line is lower than the > left, and this is more pronounced on the lower line > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Mon, Jan 27, 2014 at 3:38 PM, Darren Addy wrote: > I don't have a 1.4x to test here at work with me, but I'm pretty sure > that would allow it to cover the corners at 24-63mm also. Note that DA lenses have to have an image circle somewhat larger than APS-C, in order to accommodate sensor movement for shake reduction. So I would guess that most of them would cover FF with a 1.4x TC (though not necessarily with SR on FF). -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
on 2014-01-27 12:20 Mark Roberts wrote I think the text on the barrel was Photoshopped in but I think it's a genuine Pentax product shot done from a pre-production prototype. i think the whole thing is a fake; every detail of mount surface has highlights indicating a light source to the left, but the black body has a highlight from a light source to the right; what shows of the bayonet has two highlights … at the lower edge of metal mount surface, there is an area just left of center where the bright "metal" is out of round and blurred, making the black ring next to the mount surface narrower … the text curves such that the right side of each line is lower than the left, and this is more pronounced on the lower line -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
I would argue that it makes at least as much sense as it always has (which is to say particularly on the longer lenses). If a DA* 300mm f/4 could become a 420mm f/5.6 that is not a bad thing (and the teleconverter surely would cost less than a lens of that focal length and speed would... one would HOPE). Don't forget that with electronics communicating which lens is on the camera, a lot of things are possible with firmware updates (like lens profiles we have now would become lens profiles when mounted on the 1.4x TC). On Mon, Jan 27, 2014 at 2:37 PM, Paul Stenquist wrote: > > On Jan 27, 2014, at 3:24 PM, Darren Addy wrote: > >> To me, the point is that you make a full frame DSLR body attractive to >> people who own mostly APS-C lenses. They only have to buy one >> accessory (the 1.4x teleconverter) to make them useable. > > But the DA* lenses are superb on APS-C. Why would one want to render them > less efficient? Doesn’t make much sense. I remain convinced that the Pentax > pro body is the 645D. And my interaction with Pentax marketing seems to > support that. > > Paul >> >> Rather than seeing FF body and lens kits, don't be surprised if you >> see FF body and "full frame converter" kits. >> >> This is little different than people buying adapters to put different >> lenses on their Sony full frame Alpha 7. >> >> On Mon, Jan 27, 2014 at 2:17 PM, Dario Bonazza >> wrote: >>> Interesting (?) question: in case the 1.4x TC will allow DA lenses to cover >>> FA sensor format, one could think it's a great way to make all DA lenses >>> work with their intended FOV on a FA body. E.g. a 14mm used alone on a DA >>> body will become a 20mm by using it via the 1.4x TC on a FA body, thus >>> resulting in more or less the same FOV on different format cameras. >>> >>> Great, but what's the point of spreading the same amount of light gathered >>> by the same front lens on a larger sensor having say the same pixel count >>> (e.g. 24 MP) while losing one stop for exposure? >>> >>> >>> Dario >>> >>> >>> -Messaggio originale- From: Dario Bonazza >>> Sent: Monday, January 27, 2014 9:08 PM >>> >>> To: Pentax-Discuss Mail List >>> Subject: Re: Pentax 1.4x converter >>> >>> In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence >>> irrespectively of sensor size - and not an "equivalent to XY mm" on a given >>> format. >>> The question to be answered is whether such a combo of lens and TC will give >>> an image circle covering 24x36mm format or not. >>> Dario >>> >>> -Messaggio originale- From: Dario Bonazza >>> Sent: Monday, January 27, 2014 9:04 PM >>> To: Pentax-Discuss Mail List >>> Subject: Re: Pentax 1.4x converter >>> >>> No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if >>> any) you put behind it. >>> In case the resulting image will be large enough to cover the 24x36mm format >>> (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 >>> lens. >>> Dario >>> >>> -Messaggio originale- From: Alastair Robertson >>> Sent: Monday, January 27, 2014 8:54 PM >>> To: Pentax-Discuss Mail List >>> Subject: Re: Pentax 1.4x converter >>> >>> wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have >>> over 35mm frame more-or-less cancel out the 1.4x converter effect so >>> that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x >>> 1.4 = 12.7mm FOV on full frame? >>> >>> Alastair >>> >>> On 28 January 2014 08:42, Darren Addy wrote: >>>> >>>> On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts >>>> wrote: >>>>> >>>>> (which he says Pentax is calling a "Full Frame Converter") >>>> >>>> >>>> WUTT >>>> >>>> If this is true, is it possible that the converter will allow DA >>>> lenses (that don't quite cover full frame) to cover them adequately >>>> (albeit at 1.4x the focal length). This would be most beneficial to >>>> the faster DA lenses that don't cover full frame: >>>> DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full >>>> frame. >>>> DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 >>>> on full frame >>>> DA* 50-135mm f2.8 (with 75-197
Re: Pentax 1.4x converter
On Jan 27, 2014, at 3:24 PM, Darren Addy wrote: > To me, the point is that you make a full frame DSLR body attractive to > people who own mostly APS-C lenses. They only have to buy one > accessory (the 1.4x teleconverter) to make them useable. But the DA* lenses are superb on APS-C. Why would one want to render them less efficient? Doesn’t make much sense. I remain convinced that the Pentax pro body is the 645D. And my interaction with Pentax marketing seems to support that. Paul > > Rather than seeing FF body and lens kits, don't be surprised if you > see FF body and "full frame converter" kits. > > This is little different than people buying adapters to put different > lenses on their Sony full frame Alpha 7. > > On Mon, Jan 27, 2014 at 2:17 PM, Dario Bonazza > wrote: >> Interesting (?) question: in case the 1.4x TC will allow DA lenses to cover >> FA sensor format, one could think it's a great way to make all DA lenses >> work with their intended FOV on a FA body. E.g. a 14mm used alone on a DA >> body will become a 20mm by using it via the 1.4x TC on a FA body, thus >> resulting in more or less the same FOV on different format cameras. >> >> Great, but what's the point of spreading the same amount of light gathered >> by the same front lens on a larger sensor having say the same pixel count >> (e.g. 24 MP) while losing one stop for exposure? >> >> >> Dario >> >> >> -Messaggio originale- From: Dario Bonazza >> Sent: Monday, January 27, 2014 9:08 PM >> >> To: Pentax-Discuss Mail List >> Subject: Re: Pentax 1.4x converter >> >> In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence >> irrespectively of sensor size - and not an "equivalent to XY mm" on a given >> format. >> The question to be answered is whether such a combo of lens and TC will give >> an image circle covering 24x36mm format or not. >> Dario >> >> -Messaggio originale- From: Dario Bonazza >> Sent: Monday, January 27, 2014 9:04 PM >> To: Pentax-Discuss Mail List >> Subject: Re: Pentax 1.4x converter >> >> No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if >> any) you put behind it. >> In case the resulting image will be large enough to cover the 24x36mm format >> (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 >> lens. >> Dario >> >> -Messaggio originale- From: Alastair Robertson >> Sent: Monday, January 27, 2014 8:54 PM >> To: Pentax-Discuss Mail List >> Subject: Re: Pentax 1.4x converter >> >> wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have >> over 35mm frame more-or-less cancel out the 1.4x converter effect so >> that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x >> 1.4 = 12.7mm FOV on full frame? >> >> Alastair >> >> On 28 January 2014 08:42, Darren Addy wrote: >>> >>> On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts >>> wrote: >>>> >>>> (which he says Pentax is calling a "Full Frame Converter") >>> >>> >>> WUTT >>> >>> If this is true, is it possible that the converter will allow DA >>> lenses (that don't quite cover full frame) to cover them adequately >>> (albeit at 1.4x the focal length). This would be most beneficial to >>> the faster DA lenses that don't cover full frame: >>> DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full >>> frame. >>> DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 >>> on full frame >>> DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 >>> on full frame >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> >> >> - >> Nessun virus nel messaggio. >> Controllato da AVG - www.avg.com >> Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: >> 27/01/2014 >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/m
Re: Pentax 1.4x converter
Someone suggests taking any 1.4x teleconverter and putting one of the problematic (non-full-frame-covering) DA lenses on a full frame Pentax film camera and seeing what it looks like. So I just took a DA 16-45mm and stuck it on a ME body. Vignettes hard at the corners at 16mm. Then I put a Rear Converter K T6-2x on it and checked again. No vignetting at 16mm (though now it is a 32-90mm), I don't have a 1.4x to test here at work with me, but I'm pretty sure that would allow it to cover the corners at 24-63mm also. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
We may not have long to wait to find out. Asahi Man posted this not-so-cryptic teaser in a thread entitled: Ricoh Imaging at CP+ 2014 (February 13th-16th): "Should be a nice show :-D ;-)" http://www.dpreview.com/forums/post/52977166 On Mon, Jan 27, 2014 at 2:24 PM, Darren Addy wrote: > To me, the point is that you make a full frame DSLR body attractive to > people who own mostly APS-C lenses. They only have to buy one > accessory (the 1.4x teleconverter) to make them useable. > > Rather than seeing FF body and lens kits, don't be surprised if you > see FF body and "full frame converter" kits. > > This is little different than people buying adapters to put different > lenses on their Sony full frame Alpha 7. > > On Mon, Jan 27, 2014 at 2:17 PM, Dario Bonazza > wrote: >> Interesting (?) question: in case the 1.4x TC will allow DA lenses to cover >> FA sensor format, one could think it's a great way to make all DA lenses >> work with their intended FOV on a FA body. E.g. a 14mm used alone on a DA >> body will become a 20mm by using it via the 1.4x TC on a FA body, thus >> resulting in more or less the same FOV on different format cameras. >> >> Great, but what's the point of spreading the same amount of light gathered >> by the same front lens on a larger sensor having say the same pixel count >> (e.g. 24 MP) while losing one stop for exposure? >> >> >> Dario >> >> >> -----Messaggio originale- From: Dario Bonazza >> Sent: Monday, January 27, 2014 9:08 PM >> >> To: Pentax-Discuss Mail List >> Subject: Re: Pentax 1.4x converter >> >> In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence >> irrespectively of sensor size - and not an "equivalent to XY mm" on a given >> format. >> The question to be answered is whether such a combo of lens and TC will give >> an image circle covering 24x36mm format or not. >> Dario >> >> -Messaggio originale- From: Dario Bonazza >> Sent: Monday, January 27, 2014 9:04 PM >> To: Pentax-Discuss Mail List >> Subject: Re: Pentax 1.4x converter >> >> No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if >> any) you put behind it. >> In case the resulting image will be large enough to cover the 24x36mm format >> (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 >> lens. >> Dario >> >> -Messaggio originale- From: Alastair Robertson >> Sent: Monday, January 27, 2014 8:54 PM >> To: Pentax-Discuss Mail List >> Subject: Re: Pentax 1.4x converter >> >> wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have >> over 35mm frame more-or-less cancel out the 1.4x converter effect so >> that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x >> 1.4 = 12.7mm FOV on full frame? >> >> Alastair >> >> On 28 January 2014 08:42, Darren Addy wrote: >>> >>> On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts >>> wrote: >>>> >>>> (which he says Pentax is calling a "Full Frame Converter") >>> >>> >>> WUTT >>> >>> If this is true, is it possible that the converter will allow DA >>> lenses (that don't quite cover full frame) to cover them adequately >>> (albeit at 1.4x the focal length). This would be most beneficial to >>> the faster DA lenses that don't cover full frame: >>> DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full >>> frame. >>> DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 >>> on full frame >>> DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 >>> on full frame >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> >> >> - >> Nessun virus nel messaggio. >> Controllato da AVG - www.avg.com >> Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: >> 27/01/2014 >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml
Re: Pentax 1.4x converter
To me, the point is that you make a full frame DSLR body attractive to people who own mostly APS-C lenses. They only have to buy one accessory (the 1.4x teleconverter) to make them useable. Rather than seeing FF body and lens kits, don't be surprised if you see FF body and "full frame converter" kits. This is little different than people buying adapters to put different lenses on their Sony full frame Alpha 7. On Mon, Jan 27, 2014 at 2:17 PM, Dario Bonazza wrote: > Interesting (?) question: in case the 1.4x TC will allow DA lenses to cover > FA sensor format, one could think it's a great way to make all DA lenses > work with their intended FOV on a FA body. E.g. a 14mm used alone on a DA > body will become a 20mm by using it via the 1.4x TC on a FA body, thus > resulting in more or less the same FOV on different format cameras. > > Great, but what's the point of spreading the same amount of light gathered > by the same front lens on a larger sensor having say the same pixel count > (e.g. 24 MP) while losing one stop for exposure? > > > Dario > > > -Messaggio originale- From: Dario Bonazza > Sent: Monday, January 27, 2014 9:08 PM > > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence > irrespectively of sensor size - and not an "equivalent to XY mm" on a given > format. > The question to be answered is whether such a combo of lens and TC will give > an image circle covering 24x36mm format or not. > Dario > > -Messaggio originale- From: Dario Bonazza > Sent: Monday, January 27, 2014 9:04 PM > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if > any) you put behind it. > In case the resulting image will be large enough to cover the 24x36mm format > (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 > lens. > Dario > > -Messaggio originale- From: Alastair Robertson > Sent: Monday, January 27, 2014 8:54 PM > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have > over 35mm frame more-or-less cancel out the 1.4x converter effect so > that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x > 1.4 = 12.7mm FOV on full frame? > > Alastair > > On 28 January 2014 08:42, Darren Addy wrote: >> >> On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts >> wrote: >>> >>> (which he says Pentax is calling a "Full Frame Converter") >> >> >> WUTT >> >> If this is true, is it possible that the converter will allow DA >> lenses (that don't quite cover full frame) to cover them adequately >> (albeit at 1.4x the focal length). This would be most beneficial to >> the faster DA lenses that don't cover full frame: >> DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full >> frame. >> DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 >> on full frame >> DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 >> on full frame >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > - > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > - > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > - > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Mon, Jan 27, 2014 at 3:17 PM, Dario Bonazza wrote: > Great, but what's the point of spreading the same amount of light gathered by > the same front lens on a larger sensor having say the same pixel count (e.g. > 24 MP) while losing one stop for exposure? To smooth the transition for people with APS-C lenses, I suppose. (I don't know if it makes more sense than just cropping the middle portion of the FF sensor. I guess it depends on the FF pixel count, and whether a bigger but darker viewfinder image is better than a smaller, vignetted one.) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Interesting (?) question: in case the 1.4x TC will allow DA lenses to cover FA sensor format, one could think it's a great way to make all DA lenses work with their intended FOV on a FA body. E.g. a 14mm used alone on a DA body will become a 20mm by using it via the 1.4x TC on a FA body, thus resulting in more or less the same FOV on different format cameras. Great, but what's the point of spreading the same amount of light gathered by the same front lens on a larger sensor having say the same pixel count (e.g. 24 MP) while losing one stop for exposure? Dario -Messaggio originale- From: Dario Bonazza Sent: Monday, January 27, 2014 9:08 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence irrespectively of sensor size - and not an "equivalent to XY mm" on a given format. The question to be answered is whether such a combo of lens and TC will give an image circle covering 24x36mm format or not. Dario -Messaggio originale- From: Dario Bonazza Sent: Monday, January 27, 2014 9:04 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if any) you put behind it. In case the resulting image will be large enough to cover the 24x36mm format (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 lens. Dario -Messaggio originale- From: Alastair Robertson Sent: Monday, January 27, 2014 8:54 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have over 35mm frame more-or-less cancel out the 1.4x converter effect so that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x 1.4 = 12.7mm FOV on full frame? Alastair On 28 January 2014 08:42, Darren Addy wrote: On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts wrote: (which he says Pentax is calling a "Full Frame Converter") WUTT If this is true, is it possible that the converter will allow DA lenses (that don't quite cover full frame) to cover them adequately (albeit at 1.4x the focal length). This would be most beneficial to the faster DA lenses that don't cover full frame: DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full frame. DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 on full frame DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 on full frame -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
If Asahiman is right and this is the name (and functionality) of the product, then it wouldn't make sense for Ricoh/Pentax to formally announce it before also formally announcing a "full frame" Pentax model. (Unless Pentax anticipates that there a lot of people looking to use theirs with their pZ-1p film cameras) On Mon, Jan 27, 2014 at 2:08 PM, Dario Bonazza wrote: > In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence > irrespectively of sensor size - and not an "equivalent to XY mm" on a given > format. > The question to be answered is whether such a combo of lens and TC will give > an image circle covering 24x36mm format or not. > Dario > > -Messaggio originale- From: Dario Bonazza > Sent: Monday, January 27, 2014 9:04 PM > > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if > any) you put behind it. > In case the resulting image will be large enough to cover the 24x36mm format > (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 > lens. > Dario > > -Messaggio originale- From: Alastair Robertson > Sent: Monday, January 27, 2014 8:54 PM > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have > over 35mm frame more-or-less cancel out the 1.4x converter effect so > that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x > 1.4 = 12.7mm FOV on full frame? > > Alastair > > On 28 January 2014 08:42, Darren Addy wrote: >> >> On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts >> wrote: >>> >>> (which he says Pentax is calling a "Full Frame Converter") >> >> >> WUTT >> >> If this is true, is it possible that the converter will allow DA >> lenses (that don't quite cover full frame) to cover them adequately >> (albeit at 1.4x the focal length). This would be most beneficial to >> the faster DA lenses that don't cover full frame: >> DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full >> frame. >> DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 >> on full frame >> DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 >> on full frame >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > - > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > - > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
You are close. What get's cancelled out is that the effective FOV becomes close to the actual FOV of the converted lens. But the focal length and speed changes (1.4x and 1 stop of light). On Mon, Jan 27, 2014 at 1:54 PM, Alastair Robertson wrote: > wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have > over 35mm frame more-or-less cancel out the 1.4x converter effect so > that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x > 1.4 = 12.7mm FOV on full frame? > > Alastair > > On 28 January 2014 08:42, Darren Addy wrote: >> On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts >> wrote: >>> (which he says Pentax is calling a "Full Frame Converter") >> >> WUTT >> >> If this is true, is it possible that the converter will allow DA >> lenses (that don't quite cover full frame) to cover them adequately >> (albeit at 1.4x the focal length). This would be most beneficial to >> the faster DA lenses that don't cover full frame: >> DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full >> frame. >> DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 >> on full frame >> DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 >> on full frame >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence irrespectively of sensor size - and not an "equivalent to XY mm" on a given format. The question to be answered is whether such a combo of lens and TC will give an image circle covering 24x36mm format or not. Dario -Messaggio originale- From: Dario Bonazza Sent: Monday, January 27, 2014 9:04 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if any) you put behind it. In case the resulting image will be large enough to cover the 24x36mm format (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 lens. Dario -Messaggio originale- From: Alastair Robertson Sent: Monday, January 27, 2014 8:54 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have over 35mm frame more-or-less cancel out the 1.4x converter effect so that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x 1.4 = 12.7mm FOV on full frame? Alastair On 28 January 2014 08:42, Darren Addy wrote: On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts wrote: (which he says Pentax is calling a "Full Frame Converter") WUTT If this is true, is it possible that the converter will allow DA lenses (that don't quite cover full frame) to cover them adequately (albeit at 1.4x the focal length). This would be most beneficial to the faster DA lenses that don't cover full frame: DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full frame. DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 on full frame DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 on full frame -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if any) you put behind it. In case the resulting image will be large enough to cover the 24x36mm format (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 lens. Dario -Messaggio originale- From: Alastair Robertson Sent: Monday, January 27, 2014 8:54 PM To: Pentax-Discuss Mail List Subject: Re: Pentax 1.4x converter wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have over 35mm frame more-or-less cancel out the 1.4x converter effect so that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x 1.4 = 12.7mm FOV on full frame? Alastair On 28 January 2014 08:42, Darren Addy wrote: On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts wrote: (which he says Pentax is calling a "Full Frame Converter") WUTT If this is true, is it possible that the converter will allow DA lenses (that don't quite cover full frame) to cover them adequately (albeit at 1.4x the focal length). This would be most beneficial to the faster DA lenses that don't cover full frame: DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full frame. DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 on full frame DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 on full frame -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: 27/01/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have over 35mm frame more-or-less cancel out the 1.4x converter effect so that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x 1.4 = 12.7mm FOV on full frame? Alastair On 28 January 2014 08:42, Darren Addy wrote: > On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts > wrote: >> (which he says Pentax is calling a "Full Frame Converter") > > WUTT > > If this is true, is it possible that the converter will allow DA > lenses (that don't quite cover full frame) to cover them adequately > (albeit at 1.4x the focal length). This would be most beneficial to > the faster DA lenses that don't cover full frame: > DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full > frame. > DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 > on full frame > DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 > on full frame > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts wrote: > (which he says Pentax is calling a "Full Frame Converter") WUTT If this is true, is it possible that the converter will allow DA lenses (that don't quite cover full frame) to cover them adequately (albeit at 1.4x the focal length). This would be most beneficial to the faster DA lenses that don't cover full frame: DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full frame. DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 on full frame DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 on full frame -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
"CollinB" wrote: >On Mon Jan 27 10:08:24 AM, John Sessoms wrote: >>On 1/26/2014 12:08 PM, Collin Brendemuehl wrote: >>> >http://www.pentaxforums.com/news/pentax-14x-sdm-teleconverter-surfaces.html >>> >>> I was looking at the picture and something bothered me. >>> The curvature of the text does not match the curvature of the tc body. >>> The item may exist, but that picture is not of a real object. >> >>Do you think it might have been photoshopped? > >From what I can discern, yes. I think the text on the barrel was Photoshopped in but I think it's a genuine Pentax product shot done from a pre-production prototype. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Mon Jan 27 10:08:24 AM, John Sessoms wrote: >On 1/26/2014 12:08 PM, Collin Brendemuehl wrote: >> http://www.pentaxforums.com/news/pentax-14x-sdm-teleconverter-surfaces.html >> >> I was looking at the picture and something bothered me. >> The curvature of the text does not match the curvature of the tc body. >> The item may exist, but that picture is not of a real object. >> > >Do you think it might have been photoshopped? >From what I can discern, yes. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On 1/26/2014 12:08 PM, Collin Brendemuehl wrote: http://www.pentaxforums.com/news/pentax-14x-sdm-teleconverter-surfaces.html I was looking at the picture and something bothered me. The curvature of the text does not match the curvature of the tc body. The item may exist, but that picture is not of a real object. Do you think it might have been photoshopped? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
http://www.pentaxforums.com/news/pentax-14x-sdm-teleconverter-surfaces.html I was looking at the picture and something bothered me. The curvature of the text does not match the curvature of the tc body. The item may exist, but that picture is not of a real object. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Stanley Halpin wrote: >I do not frequent the PF, I only see things there when someone here provides >a link. So I have no way to evaluate the credibility of this rumor. It's been confirmed by a guy who goes by the moniker of "Asahi Man" on DP Review's Pentax board. Asahi Man seems to have some working relationship with Pentax: He posts very rarely on the subject of new products, usually only fairly close to release date and he's spot on with every detail he reveals. He's indicated he'll be able to try out the teleconverter (which he says Pentax is calling a "Full Frame Converter") himself in two weeks. -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Sat, Jan 25, 2014 at 8:17 PM, Miserere wrote: > I found my Tamron 1.4x TC worked just fine. With SDM? I've got one, that everyone says works with SDM, and I don't find it to work that well at all with my DA* 300/4. The optical quality is good, but whenever the camera attempts to AF, it overshoots, and I usually have to attempt AF two or three times to get a solid lock. My interpretation is that the camera AF system measures a phase error 1.4x larger than it "should" be, and drives the lens AF motor more than it should. (With screw-drive lenses, the teleconverter is geared to reduce the amount the lens is driven.) Besides that, there's the fact that the camera doesn't know the change in effective focal length for shake reduction, and there's no record of the teleconverter in the EXIF. I'm eagerly looking forward to a proper 1.4x TC... I just hope I can afford it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Miserere wrote: >That didn't take them long, did it? How long have people been >*pleading* for one of these? 5 years? 7 years? > >I found my Tamron 1.4x TC worked just fine. I expect this TC to be *much* better than the Tamron. And to be very expensive. -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
That didn't take them long, did it? How long have people been *pleading* for one of these? 5 years? 7 years? I found my Tamron 1.4x TC worked just fine. Cheers, —M. \/\/o/\/\ --> http://WorldOfMiserere.com http://EnticingTheLight.com A Quest for Photographic Enlightenment On 25 January 2014 16:16, Dario Bonazza wrote: > Is that your dream? > http://www.pentaxforums.com/forums/16-pentax-news-rumors/249449-image-hd-pentax-1-4x-teleconverter.html > Are you sure? > > Dario > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
Ditto. Paul via phone > On Jan 25, 2014, at 7:03 PM, Stanley Halpin > wrote: > > >> On Jan 25, 2014, at 4:16 PM, Dario Bonazza wrote: >> >> Is that your dream? >> http://www.pentaxforums.com/forums/16-pentax-news-rumors/249449-image-hd-pentax-1-4x-teleconverter.html >> Are you sure? >> >> Dario > > I do not frequent the PF, I only see things there when someone here provides > a link. So I have no way to evaluate the credibility of this rumor. Certainly > we have been hearing about TC’s for a long time, we have even seen them on > the Roadmap. Sooner or later I would think that we would actually be able to > buy one. I will pre-order as soon as the option is available. > > stan > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 1.4x converter
On Jan 25, 2014, at 4:16 PM, Dario Bonazza wrote: > Is that your dream? > http://www.pentaxforums.com/forums/16-pentax-news-rumors/249449-image-hd-pentax-1-4x-teleconverter.html > Are you sure? > > Dario > I do not frequent the PF, I only see things there when someone here provides a link. So I have no way to evaluate the credibility of this rumor. Certainly we have been hearing about TC’s for a long time, we have even seen them on the Roadmap. Sooner or later I would think that we would actually be able to buy one. I will pre-order as soon as the option is available. stan -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Pentax 1.4x converter
Is that your dream? http://www.pentaxforums.com/forums/16-pentax-news-rumors/249449-image-hd-pentax-1-4x-teleconverter.html Are you sure? Dario -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
