Re: An example of timeless design and style
Nice Don. The dialed to eleven version is not my cup o' tea, but its a gorgeous car. I believe one you photographed is a '52 however. The '53 '54 are a bit more rounded. On Mon, Jun 4, 2012 at 3:43 PM, Don Guthrie shark50...@gmail.com wrote: My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. -- 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: PESO: (T)high Fashion
Something funny and compelling about that photo. Cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: Daniel J. Matyola danmaty...@gmail.com Sent: June 4, 2012 6/4/12 To: Pentax-Discuss Mail List pdml@pdml.net Subject: PESO: (T)high Fashion http://photo.net/photodb/photo?photo_id=15813371size=md Comments are always welcome. Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola -- 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: An example of timeless design and style
I was, also, thinking '52. (?) Jack Davis http://www.pentaxphotogallery.com/artists/jackdavis http://www.photolightimages.com - Original Message - From: Darren Addy pixelsmi...@gmail.com To: Pentax-Discuss Mail List pdml@pdml.net Cc: Sent: Monday, June 4, 2012 2:20 PM Subject: Re: An example of timeless design and style Nice Don. The dialed to eleven version is not my cup o' tea, but its a gorgeous car. I believe one you photographed is a '52 however. The '53 '54 are a bit more rounded. On Mon, Jun 4, 2012 at 3:43 PM, Don Guthrie shark50...@gmail.com wrote: My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. -- 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. -- 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: External storage of raw files
On Jun 3, 2012, at 2:39 PM, Paul Sorenson wrote: Larry - This workaround works with Windows. Maybe you can come up with a way to do this with the Mac OS. http://vimeo.com/12697388 Thanks. I suspect that the trick will be to just share files on an external drive, and sneakernet the catalog. -- Larry Colen l...@red4est.com sent from i4est -- 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: An example of timeless design and style
The hdr version is especially striking. The background was nice to you. It's hard to get a shot of a parked car without some crap getting in the way (wires, lamposts, other cars, pedestrians, ugly backdrop. This one works to make an overall wonderful photo. Cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: Don Guthrie shark50...@gmail.com Sent: June 4, 2012 6/4/12 To: pdml@pdml.net Subject: An example of timeless design and style My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. -- 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: Peso's Holborne-Glover
I agree with Dan. The two stones is especially well composed. Cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: David J Brooks pentko...@gmail.com Sent: June 4, 2012 6/4/12 To: Pentax Discuss pdml@pdml.net, Petch Dianne dianne.pe...@yahoo.com, Barbara Brooks bbaro...@gmail.com, Darryl Button butto...@mmm.ca, butt...@mmm.ca Subject: Peso's Holborne-Glover Had to drive up to our Sutton facility to do the monthly site safety inspection, and took a road i seldom use, and spotted this small cemetery. I went back on Sunday with the K-5 and FA 100 f2.8 macro and grabbed a few shots. Fallen stone: http://photo.net/photodb/photo?photo_id=15854412 Two stones: http://photo.net/photodb/photo?photo_id=15854413 Holborne-Glover: http://photo.net/photodb/photo?photo_id=15854423 Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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- An example of timeless design and style
As I remember Ken mine took oil by the quart - every week or two. Thanks for the look and yes the HDR is my preferred version. I saw some HDR cars done by Rick Sammon and even though he's a Canon user I did like what he did with cars in Cuba. Respectfully yours ..DG Message: 10 Date: Mon, 4 Jun 2012 17:16:20 -0400 From: kwal...@peoplepc.com To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: An example of timeless design and style Message-ID: 4BDCAB1C85B64AF8A8A720B0EDDBC8D4@kena60ebc3b689 Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=response Well I wouldn't exactly call that a great design but it is certainly timeless. My dad had a 53 but it was a 4 door. It was on that car I performed my first oil change found out when they said XX qts of oil, they meant it. Nothing like foaming oil coming out of the breather. Nice capture, I like both renditions. I see more and more of HDR applied to older car images I really like most of them - to me it gives them a classy/artsy look. Now I expect you to give this comment the due respect it deserves. ;+} Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: Don Guthrie shark50...@gmail.com Subject: An example of timeless design and style My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. -- 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: The Image Deconstructed - NATO protest
Very timely and informative. Great interview! cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: Derby Chang der...@iinet.net.au Sent: June 4, 2012 6/4/12 To: Pentax-Discuss Mail List pdml@pdml.net Subject: The Image Deconstructed - NATO protest Rather good TID this week http://www.imagedeconstructed.com/post/spotlight-on-brian-cassella -- der...@iinet.net.au http://members.iinet.net.au/~derbyc -- 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: An example of timeless design and style
It's only dialed to 9 1/2 ;) but I do respect your position. Yeah my brother agrees this one is a 52. I later owned a Pontiac (with a straight 8) of this same vintage and I may get them confused. My memory gets older every year. Message: 11 Date: Mon, 4 Jun 2012 16:20:06 -0500 From: Darren Addy pixelsmi...@gmail.com To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: An example of timeless design and style Message-ID: CAEQABGT5peJCVup8GKWgBU0VP0Z=k4mq3cvamh7nnxtbauy...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 Nice Don. The dialed to eleven version is not my cup o' tea, but its a gorgeous car. I believe one you photographed is a '52 however. The '53 '54 are a bit more rounded. On Mon, Jun 4, 2012 at 3:43 PM, Don Guthrie shark50...@gmail.com wrote: My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. -- 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: An example of timeless design and style
Probably right Jack. All I really remember was the Chevy burned oil and the Pontiac leaked transmission fluid. Thanks for looking. Message: 13 Date: Mon, 4 Jun 2012 14:28:00 -0700 (PDT) From: Jack Davis jdavi...@yahoo.com To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: An example of timeless design and style Message-ID: 1338845280.72875.yahoomail...@web130106.mail.mud.yahoo.com Content-Type: text/plain; charset=us-ascii I was, also, thinking '52. (?) Jack Davis http://www.pentaxphotogallery.com/artists/jackdavis http://www.photolightimages.com - Original Message - My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d -- 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: GFM Update
On Mon, Jun 4, 2012 at 2:05 PM, knarftheria...@gmail.com knarftheria...@gmail.com wrote: None of that stuff was there the two years I made it down to GFM. Really. Dave :-( cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: David Savage ozsav...@gmail.com Sent: June 4, 2012 6/4/12 To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: GFM Update I suspect he has something more like this in mind (NSFW): https://plus.google.com/u/0/photos/109151676136581954240/albums/posts/5710920456247789250 ;-) DS On 4 June 2012 23:01, David J Brooks pentko...@gmail.com wrote: On Mon, Jun 4, 2012 at 10:06 AM, Cotty cotty...@mac.com wrote: On 4/6/12, David Savage, discombobulated, unleashed: Makes me want to go back with my full kit. Just make sure you bring some gorgeous critters. Like these?? https://plus.google.com/photos/106773593359324596776/albums/5072636880491643169/5072645156893622786?banner=pwa Dave -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche -- http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: BESO wood work
On Mon, Jun 4, 2012 at 1:18 PM, knarftheria...@gmail.com knarftheria...@gmail.com wrote: All set for next winter. Well some one is for sure.:-) Its soft Maple, i kept some for kindling, some is going for fire pits and the majority is going to a sugar bush for their boiler. ;-) cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: David J Brooks pentko...@gmail.com Sent: June 4, 2012 6/4/12 To: Pentax Discuss pdml@pdml.net Subject: BESO wood work http://brooksinthecountry.blogspot.ca/ Finally cleaned up the piles into one neat pile. Let the drying begin/ Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: PESO - Here's How
Excellent Dave On Sun, Jun 3, 2012 at 10:07 PM, Paul Stenquist pnstenqu...@comcast.net wrote: http://photo.net/photodb/photo?photo_id=15851292size=lg -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: PESO: (T)high Fashion
I don't know, i think i would give them an 8 myself. Dave On Mon, Jun 4, 2012 at 2:28 PM, Daniel J. Matyola danmaty...@gmail.com wrote: http://photo.net/photodb/photo?photo_id=15813371size=md Comments are always welcome. Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: PESO: Struggling Pine
Very nice i like the texture and composition here. Dave On Mon, Jun 4, 2012 at 11:05 AM, Jack Davis jdavi...@yahoo.com wrote: Shot near the crest of a high pass through which you enter the eastern gate to Yellowstone NP. A few years ago a person bought a framed print of this from a retail display at a local photo shop. A few days later she was back declaring it positively spiritual and bought a second copy for a friend. It was just declined by PPG . Comments? Jack http://photolightimages.com/aspupload/detail.asp?ID=645 Jack Davis http://www.pentaxphotogallery.com/artists/jackdavis http://www.photolightimages.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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: PESO: Tour of Somerville 4
Well done, good pan just the right amount of Frank, er, i mean motion blur. Dave On Mon, Jun 4, 2012 at 10:04 AM, Daniel J. Matyola danmaty...@gmail.com wrote: http://photo.net/photodb/photo?photo_id=15807039size=md Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: PESO: Struggling Pine
Appreciated words, Dave! Thanks! Jack Davis http://www.pentaxphotogallery.com/artists/jackdavis http://www.photolightimages.com - Original Message - From: David J Brooks pentko...@gmail.com To: Pentax-Discuss Mail List pdml@pdml.net Cc: Sent: Monday, June 4, 2012 2:55 PM Subject: Re: PESO: Struggling Pine Very nice i like the texture and composition here. Dave On Mon, Jun 4, 2012 at 11:05 AM, Jack Davis jdavi...@yahoo.com wrote: Shot near the crest of a high pass through which you enter the eastern gate to Yellowstone NP. A few years ago a person bought a framed print of this from a retail display at a local photo shop. A few days later she was back declaring it positively spiritual and bought a second copy for a friend. It was just declined by PPG . Comments? Jack http://photolightimages.com/aspupload/detail.asp?ID=645 Jack Davis http://www.pentaxphotogallery.com/artists/jackdavis http://www.photolightimages.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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: An example of timeless design and style
On Jun 4, 2012, at 1:43 PM, Don Guthrie wrote: My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d The second is a classic HDR of a car photo. Well done. I'd like to see it cropped in a lot tighter, the car is a lot more interesting than the building. Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. -- 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. -- Larry Colen l...@red4est.com sent from i4est -- 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: An example of timeless design and style
My first car was a 1950 Plymouth Special Deluxe (2 dr. sedan) like this one only black: http://www.flickr.com/photos/jacksnell707/3025596031/lightbox/ My grandfather purchased it at a farm auction for $11. We pulled it home, rebuilt the brakes and put a clutch plate in it and I drove it to work and school. A couple of months earlier, my cousin's grandfather had purchased him his first car, a 1953 Cranbrooke, for $12.50 at another farm auction. That meant that I beat him by $1.50, although one could correctly argue that he got a three years' newer car for his $1.50. I like the car, but I wasn't exactly cool, since this was the mid-70s when the cool kids were driving Mustangs and Chevelle's and such. Something tells me that most of those Mustang and Chevelle are now Canon and Nikon shooters. : ) : ) : ) Once an oddball, always an oddball. -- 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.
How much difference does optimizing the aperture make?
I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est -- 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: How much difference does optimizing the aperture make?
On 2012-06-04 18:22, Larry Colen wrote: Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. If you're using an F series or later lens, and you put the camera's auto program into MTF mode in the menus (it might be the default), it will base it's aperture selections on MTF data in the lens' on-board chip. This is at least Pentax' idea of the best aperture/shutter tradeoff for the particular lens. -- Doug Lefty Franklin NutDriver Racing http://NutDriver.org Facebook NutDriver Racing Sponsored by Murphy -- 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: External storage of raw files
On Mon, Jun 4, 2012 at 2:28 PM, Larry Colen l...@red4est.com wrote: I suspect that the trick will be to just share files on an external drive, and sneakernet the catalog. Just put the Lightrom catalog folder on the same hard drive as the image files and be sure that the drive has been formatted with a compatible file system for read/write to all intended target systems. That is, FAT32 for Mac OS X v10.6.x and Windows XP, ExFAT for Mac OS X v10.7 and Windows Vista. (You can still use FAT32, but ExFAT is more efficient.) Then you just plug the drive into whatever system you want to edit with and double click the catalog on the drive to start Lightroom. Simple. I do this all the time when I'm traveling or working on a client's computer, or carrying work in progress between my personal system and my work system. -- Godfrey godfreydigiorgi.posterous.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: How much difference does optimizing the aperture make?
On Mon, Jun 4, 2012 at 6:22 PM, Larry Colen l...@red4est.com wrote: optimizing aperture for sharpness is not the most productive place to spend my time and energy. Mark! Apologies for taking that out of context. :-) That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. Yes!! One of the best arguments for keeping one lens on your camera for a goodly time and really learning it, is so you can empirically determine your own personal subject-lens-camera-brain sweet spots. For example I've learned that f/2.0 on the DA*55 is a really sweet spot for beautiful portraits. I have never once pored over any MTF * charts for any Pentax lens, let alone the DA*55. But I've taken thousands of frames with it and analyzed and post-processed them until they hit my sweet spot for beauty. -- -bmw [*] or MTBF, or BMF -- 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: iPad rendering fun
My question is why? (besides just because it's fun/cool or as a proof of concept)? Does it provide any advantages over the laptop/desktop-based applications? Just because one can play tetris on a programmable calculator, it doesn't make that calculator a typical gaming platform. Igor On Sun, Jun 3, 2012 at 11:42 PM, Christine Aguila christine at caguila.com wrote: Hi Everyone: I finally purchased the card reader for the iPad and have been having a little rendering fun with some photo apps for the iPad, namely, Photogene, Snapseed, and PhotoToaster. After I played with the photos, it was a snap to import them into Lightroom to make a web gallery. The iPad is pretty fun. My only regret is not buying the 64 gig version, or at least the 32 gig. Well, guess I'll save up for the 4th or 5th generation version :-). http://www.caguila.com/swans/index.html Cheers, Christine -- 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: External Storage of RAW Files
As a curious (perhaps pointless) counter-example: I've got some software on oiled paper-tape that is going to outlast the DC600 tapes, floppies, CDs, DVDs and harddrives that it's been migrated to over the years. Not that there's going to be much actual call for my copies of PDP8/e Focal or OS8. I just have to keep my Teletype reader serviced and I'm all set. On Mon, Jun 4, 2012 at 2:04 PM, steve harley p...@paper-ape.com wrote: on 2012-06-04 10:54 Godfrey DiGiorgi wrote Sorry - writable optical media fail MUCH faster than hard drives, have less capacity, and are much more maintenance work. I wouldn't touch Blue-Ray for archive storage, don't bother with DVD either. indeed, i have a spindle of 90 or so DVD-R blanks that have been a paper weight in my office for several years; if someone wants them … but yeah, somehow i have managed to hang onto the first files i produced on a Mac (MacPaint files from 1985, which the OS can _still_ render); after spending their first few years on a floppy disk, they've been moving from hard drive to hard drive ever since Rotating media hard drives are cheap and are currently the most reliable and best bang for the buck capacity wise. and with a good backup and verification strategy, will demonstrably last many decades -- 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: iPad rendering fun
Well, it's great to have the iPad when you're not near a desktop or laptop like when you're traveling. The iPad doesn't replace serious desk top darkroom workflow; it's just a fun supplement to the workflow. On Jun 4, 2012, at 6:03 PM, Igor Roshchin s...@komkon.org wrote: My question is why? (besides just because it's fun/cool or as a proof of concept)? Does it provide any advantages over the laptop/desktop-based applications? Just because one can play tetris on a programmable calculator, it doesn't make that calculator a typical gaming platform. Igor On Sun, Jun 3, 2012 at 11:42 PM, Christine Aguila christine at caguila.com wrote: Hi Everyone: I finally purchased the card reader for the iPad and have been having a little rendering fun with some photo apps for the iPad, namely, Photogene, Snapseed, and PhotoToaster. After I played with the photos, it was a snap to import them into Lightroom to make a web gallery. The iPad is pretty fun. My only regret is not buying the 64 gig version, or at least the 32 gig. Well, guess I'll save up for the 4th or 5th generation version :-). http://www.caguila.com/swans/index.html Cheers, Christine -- 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: iPad rendering fun
Thanks, Don! Cheers, Christine On Jun 4, 2012, at 12:11 PM, Don Guthrie shark50...@gmail.com wrote: I agree fun is the word. Although the results like the ones you posted are sometimes better than the equipment and processing would indicate. Art through technology. Message: 7 Date: Sun, 3 Jun 2012 22:42:43 -0500 From: Christine Aguila christ...@caguila.com To: PDML List pdml@pdml.net Subject: iPad rendering fun Message-ID: ebcee547-1fa7-4772-9b82-e35eb588e...@caguila.com Content-Type: text/plain; charset=us-ascii Hi Everyone: I finally purchased the card reader for the iPad and have been having a little rendering fun with some photo apps for the iPad, namely, Photogene, Snapseed, and PhotoToaster. After I played with the photos, it was a snap to import them into Lightroom to make a web gallery. The iPad is pretty fun. My only regret is not buying the 64 gig version, or at least the 32 gig. Well, guess I'll save up for the 4th or 5th generation version . http://www.caguila.com/swans/index.html Cheers, Christine -- 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: An example of timeless design and style
Quoting Don Guthrie shark50...@gmail.com: My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. Great job with both versions. The HDR treatment is especially striking. The clean background really helps as Frank mentioned. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- 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: PESO: (T)high Fashion
Quoting Daniel J. Matyola danmaty...@gmail.com: http://photo.net/photodb/photo?photo_id=15813371size=md Comments are always welcome. Any chance they were designed by Marc Newson? -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- 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: iPad rendering fun
On Mon, Jun 4, 2012 at 4:03 PM, Igor Roshchin s...@komkon.org wrote: My question is why? (besides just because it's fun/cool or as a proof of concept)? Does it provide any advantages over the laptop/desktop-based applications? Just because one can play tetris on a programmable calculator, it doesn't make that calculator a typical gaming platform. Yes. It is far more portable. So on my last trip (over the past weekend), I was able to carry camera and processing workstation in the smallest space and lightest weight bag imaginable. I shot several photos at a friend's wedding, processed them on the spot, and delivered them to their email accounts for them to share and enjoy. The iPad is quite a powerful computer and does a darn good job of image processing. It's not the right environment for raw conversion processing, so the available (and excellent) PhotoRAW raw processor runs very slowly, but even there it does a superb job. I've posted this before ... this entire set, including the formatting into a slide show or electronic book, was done while on the road last Fall using the GXR and iPad 2. HTML: http://dl.dropbox.com/u/25268645/on_travel_2011/index.html PDF: http://dl.dropbox.com/u/25268645/OnTravel-2011-2.pdf The ability to do that while traveling, on a machine that weighs a mere pound and is useful for a bazillion other things as well, is valuable. -- Godfrey godfreydigiorgi.posterous.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: How much difference does optimizing the aperture make?
I never really spent too much time worrying about researching the sweet spot. I just chose the aperture that gave me the DoF I wanted. That said, with the D800's stupidly high resolution, it really pays to hit the sweet spot. DS On 5 June 2012 06:53, Bruce Walker bruce.wal...@gmail.com wrote: On Mon, Jun 4, 2012 at 6:22 PM, Larry Colen l...@red4est.com wrote: optimizing aperture for sharpness is not the most productive place to spend my time and energy. Mark! Apologies for taking that out of context. :-) That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. Yes!! One of the best arguments for keeping one lens on your camera for a goodly time and really learning it, is so you can empirically determine your own personal subject-lens-camera-brain sweet spots. For example I've learned that f/2.0 on the DA*55 is a really sweet spot for beautiful portraits. I have never once pored over any MTF * charts for any Pentax lens, let alone the DA*55. But I've taken thousands of frames with it and analyzed and post-processed them until they hit my sweet spot for beauty. -- -bmw [*] or MTBF, or BMF -- 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: PESO: Struggling Pine
Quoting Jack Davis jdavi...@yahoo.com: Shot near the crest ofnbsp;a high passnbsp;through whichnbsp;you enternbsp;the eastern gate to Yellowstone NP. A few years ago anbsp;person bought a framed print of thisnbsp;from anbsp;retail display at a localnbsp;photo shop. Anbsp;few days later she was back declaring it positively spiritual and boughtnbsp;a second copy for a friend. nbsp; It was just declined by PPG . nbsp; Comments? nbsp; Jack nbsp; http://photolightimages.com/aspupload/detail.asp?ID=645 No so much 'struggling' as making the best of an unfortunate choice in location. It would be interesting to see it in a few years - it looks like the trunk will need to undergo a sharp turn. Excellent photo - I would have given it a 'thumbs up' had it appeared while I was voting. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- 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: How much difference does optimizing the aperture make?
If you can find the MTF charts for each lens, it will tell you all you need to know about what aperture it is sharpest at. On Mon, Jun 4, 2012 at 6:22 PM, Larry Colen l...@red4est.com wrote: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est -- 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. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.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: Peso's Holborne-Glover
Quoting knarftheria...@gmail.com: I agree with Dan. The two stones is especially well composed. I agree with Frank. Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ --- Original Message --- From: David J Brooks pentko...@gmail.com Sent: June 4, 2012 6/4/12 To: Pentax Discuss pdml@pdml.net, Petch Dianne dianne.pe...@yahoo.com, Barbara Brooks bbaro...@gmail.com, Darryl Button butto...@mmm.ca, butt...@mmm.ca Subject: Peso's Holborne-Glover Had to drive up to our Sutton facility to do the monthly site safety inspection, and took a road i seldom use, and spotted this small cemetery. I went back on Sunday with the K-5 and FA 100 f2.8 macro and grabbed a few shots. Fallen stone: http://photo.net/photodb/photo?photo_id=15854412 Two stones: http://photo.net/photodb/photo?photo_id=15854413 Holborne-Glover: http://photo.net/photodb/photo?photo_id=15854423 Dave -- 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: PESO: Struggling Pine
on 2012-06-04 9:05 Jack Davis wrote Shot near the crest of a high pass through which you enter the eastern gate to Yellowstone NP. A few years ago a person bought a framed print of this from a retail display at a local photo shop. A few days later she was back declaring it positively spiritual and bought a second copy for a friend. It was just declined by PPG . Comments? Jack http://photolightimages.com/aspupload/detail.asp?ID=645 i like this photo but it feels a little flat to me, and i don't see the struggle — it seems to be thriving under the shelter of what seems to be (have to infer from the shadows) an overhang; is it bending already, or is it still vertical, can't tell i do like the red mark, and i think i'd like the same scene with no tree too -- 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: PESO: Struggling Pine
It appeared to be somewhat crowded at the base. Also, it seemed shy of limbs for it's height. May be a moisture thing. In due time, I imagine it will have to bend upon contact the granite rock face. Jack Davis http://www.pentaxphotogallery.com/artists/jackdavis http://www.photolightimages.com - Original Message - From: steve harley p...@paper-ape.com To: Pentax-Discuss Mail List pdml@pdml.net Cc: Sent: Monday, June 4, 2012 4:38 PM Subject: Re: PESO: Struggling Pine on 2012-06-04 9:05 Jack Davis wrote Shot near the crest of a high pass through which you enter the eastern gate to Yellowstone NP. A few years ago a person bought a framed print of this from a retail display at a local photo shop. A few days later she was back declaring it positively spiritual and bought a second copy for a friend. It was just declined by PPG . Comments? Jack http://photolightimages.com/aspupload/detail.asp?ID=645 i like this photo but it feels a little flat to me, and i don't see the struggle — it seems to be thriving under the shelter of what seems to be (have to infer from the shadows) an overhang; is it bending already, or is it still vertical, can't tell i do like the red mark, and i think i'd like the same scene with no tree too -- 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: PESO: Struggling Pine
Thanks, Brian! From time to time I've wondered what became of it. Jack Davis http://www.pentaxphotogallery.com/artists/jackdavis http://www.photolightimages.com - Original Message - From: Brian Walters apathy...@lyons-ryan.org To: Pentax-Discuss Mail List pdml@pdml.net Cc: Sent: Monday, June 4, 2012 4:31 PM Subject: Re: PESO: Struggling Pine Quoting Jack Davis jdavi...@yahoo.com: Shot near the crest ofnbsp;a high passnbsp;through whichnbsp;you enternbsp;the eastern gate to Yellowstone NP. A few years ago anbsp;person bought a framed print of thisnbsp;from anbsp;retail display at a localnbsp;photo shop. Anbsp;few days later she was back declaring it positively spiritual and boughtnbsp;a second copy for a friend. nbsp; It was just declined by PPG . nbsp; Comments? nbsp; Jack nbsp; http://photolightimages.com/aspupload/detail.asp?ID=645 No so much 'struggling' as making the best of an unfortunate choice in location. It would be interesting to see it in a few years - it looks like the trunk will need to undergo a sharp turn. Excellent photo - I would have given it a 'thumbs up' had it appeared while I was voting. --Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ --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.
How much difference does optimizing the aperture make?
Larry's ideas: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen lrc at red4est.com sent from i4est Larry, I'd consider both sharpness and DOF when choosing the aperture for one particular pic. Manual focus, f/8 at 2m with the wide part of the 18~55 has given me the fastest AF in town. It also has improved sharpness across the frame. Using the fixed 50s I see a strong diff as I go from wide open to f/5.6 - but then I often want less focus on the background and accept less sharpness. My old SMC Takumar 135 f/2.5 is soft open and gets very sharp from 5.6 to 11. I checked MTF charts / pratical resolution tests of lenses, and did my own over the years. Some of my results did go against others, but all my lenses are softer wide open than at some other point, both in the tripod against some target and in the real world. Knowing what to expect at any particular setting is useful, IMHO. From memory, some lenses got sharp faster - close to wide open - and two in particular needed to be closed a lot to behave - an ancient Tokina 28-85 and Sigma's 24mm (first version). -- luiz felipe luiz.felipe at luizfelipe.fot.br -- 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: How much difference does optimizing the aperture make?
On 6/4/2012 6:22 PM, Larry Colen wrote: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est To a large extent it depends on the lens - I've seen some that benefit hugely from being stopped down one or two stops and others that show less of an improvement. My A 50 1.4 benefits form being stopped down, my FA 50 1.7 is almost as good wide open as it is at f 4 or 5.6. Back when I had the Rikenon 55MM F1.2 it was noticeably less sharp wide open (and also had a fair bit of light fall off.) My Tokina 400 f5.6 is not so sharp at f5.6 but improves tremendously at f8. Most macro lenses I've tried benefit from stopping down but are very good wide open as well. What it boils down to (for me) - in theory any lens would benefit from stopping down one or two stops, but unless I see a difference I don't worry about it. Stopping down = slow shutter speed or higher ISO, either of which would probably offset the benefit gained by shooting at the optimum f stop. I do notice a loss of sharpness when stopping down to f16 or beyond, I assume due to diffraction. So, as a general rule of thumb I try to stick with f8 or at the most f11 . Makes for nicer backgrounds as well. For general shooting I find f5.6 to usually be fine for DOF. You really just got to try out your lenses and see what you experience. MCC -- 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: How much difference does optimizing the aperture make?
F/5.6 and be there. Sent from my iPad Jeffery L. Smith New Orleans, Louisiana USA On Jun 4, 2012, at 19:05, Mark C pdml-m...@charter.net wrote: On 6/4/2012 6:22 PM, Larry Colen wrote: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est To a large extent it depends on the lens - I've seen some that benefit hugely from being stopped down one or two stops and others that show less of an improvement. My A 50 1.4 benefits form being stopped down, my FA 50 1.7 is almost as good wide open as it is at f 4 or 5.6. Back when I had the Rikenon 55MM F1.2 it was noticeably less sharp wide open (and also had a fair bit of light fall off.) My Tokina 400 f5.6 is not so sharp at f5.6 but improves tremendously at f8. Most macro lenses I've tried benefit from stopping down but are very good wide open as well. What it boils down to (for me) - in theory any lens would benefit from stopping down one or two stops, but unless I see a difference I don't worry about it. Stopping down = slow shutter speed or higher ISO, either of which would probably offset the benefit gained by shooting at the optimum f stop. I do notice a loss of sharpness when stopping down to f16 or beyond, I assume due to diffraction. So, as a general rule of thumb I try to stick with f8 or at the most f11 . Makes for nicer backgrounds as well. For general shooting I find f5.6 to usually be fine for DOF. You really just got to try out your lenses and see what you experience. MCC -- 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: How much difference does optimizing the aperture make?
In theory a perfect lens would be sharpest wide open, so a really good lens would be sharpest close to wide open. If it takes 4 or 5 stops to sharpen up a lens, its probably not that great. As for good rules of thumb, I find f5.6 or f8 to usually work pretty damn good - J.C.O'Connell hifis...@gate.net - -Original Message- From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of Mark C Sent: Monday, June 04, 2012 8:06 PM To: Pentax-Discuss Mail List Subject: Re: How much difference does optimizing the aperture make? On 6/4/2012 6:22 PM, Larry Colen wrote: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est To a large extent it depends on the lens - I've seen some that benefit hugely from being stopped down one or two stops and others that show less of an improvement. My A 50 1.4 benefits form being stopped down, my FA 50 1.7 is almost as good wide open as it is at f 4 or 5.6. Back when I had the Rikenon 55MM F1.2 it was noticeably less sharp wide open (and also had a fair bit of light fall off.) My Tokina 400 f5.6 is not so sharp at f5.6 but improves tremendously at f8. Most macro lenses I've tried benefit from stopping down but are very good wide open as well. What it boils down to (for me) - in theory any lens would benefit from stopping down one or two stops, but unless I see a difference I don't worry about it. Stopping down = slow shutter speed or higher ISO, either of which would probably offset the benefit gained by shooting at the optimum f stop. I do notice a loss of sharpness when stopping down to f16 or beyond, I assume due to diffraction. So, as a general rule of thumb I try to stick with f8 or at the most f11 . Makes for nicer backgrounds as well. For general shooting I find f5.6 to usually be fine for DOF. You really just got to try out your lenses and see what you experience. MCC -- 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: How much difference does optimizing the aperture make?
The optimum aperture does make a noticeable difference in sharpness with most good glass, but using it shouldn't overrule your DOF needs. With the K-5, you can set your program mode to choose the MTF aperture when you push the green button. On the new DA* zooms, it comes early -- f4 in many cases. It varies on individual lenses with focal length, and program mode recognizes that. In my experience the optimum ap on most older Pentax glass is more typically f8 or even f11. Counting on DOF to achieve sharpness is just wrongheaded in most cases. (Shooting from the hip at hyper focal distance would be an exception.). But by and large focus has to be accurate and DOF optimum for the job. Small aps, in the f16 and smaller range do cause loss of sharpness due to diffraction, but when you need a small ap for extreme DOF, you have to bite the bullet and go for it. Or shoot off a tripod with different focus points and composite the result. On Jun 4, 2012, at 6:22 PM, Larry Colen wrote: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est -- 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: GESO - Spring Odes Part II
On 6/3/2012 10:15 PM, Paul Stenquist wrote: Another superb set. The twin-spotted spike tail is my favorite. Gorgeous critter that. Paul On Jun 3, 2012, at 9:57 PM, Mark C wrote: Thanks, Paul - those spiketails are big - a good 4 inches long. MCC -- 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: GESO - Spring Odes Part II
On 6/3/2012 10:37 PM, knarftheria...@gmail.com wrote: Another stunning gallery. Until recently I thought they were all just dragonflies. I had no idea there were so many different species and that they varied so much in shape and colouration. Amazing! cheers, frank Thanks Frank! I think there something like 300 species of dragonflies in North America. There's quite a bit of range shifting going on right now and species are moving north into new territories with the warmer weather - right now being the last few years. SInce most species look different between the time the first emerge and the time they mature, you sorta get a twofer in terms of photographic opportunities. Thanks for looking. MCC -- 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: PDML statistics
Works either way. ;-) On Mon, Jun 4, 2012 at 4:30 PM, John Sessoms jsessoms...@nc.rr.com wrote: From: Steven Desjardins I plan to post seven stupid things a a day. OK, seven extra stupid things a day. Does extra parse with seven or with stupid? On Sun, Jun 3, 2012 at 7:44 PM, steve harley p...@paper-ape.com wrote: on 2012-06-03 16:27 P. J. Alling wrote Now do a time series regression analysis and a fitted currve to predict future message volume. i predict volumes of future messages -- 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. -- Steve Desjardins -- 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: External Storage of RAW Files
On 04/06/2012 9:23 AM, Bipin Gupta wrote: Why not use archival quality Blu Ray Discs. You could burn two or more and disperse them to family/friends for safe keeping just in case . For those still in the DVD era, archival quality scratch proof coated discs are available in over 8 GB capacities. Ultimately all Hard Drives and solid state storage systems are bound to fail, as they have a life. Folks with a Raid Array (of Hard Disks) stand a better chance of recovery of failed drives ofcourse, but then mother board electronics are the weak link in such systems. For those of us with lots of moolah, cloud storage on a far away server is another safe way of storing your photos. Bipin - from a far away enchanting land. I've read reports of archival blue rays failing within startlingly short periods of time, and cloud storage is only as long lived as the company running the facility. IIRC, recently there was a cloud storage company in the USA that got shut down by the feds because some of their members were storing data they didn't own. I'm not sure if the golden users were able to retain their data or not, but there was certainly a period of time when that data wasn't available to them. I don't really think one digital storage technology negates the use of another one in this instance, since they are all much more failure prone than a piece of paper stored in a box under the bed. -- William Robb -- 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: PESO: (T)high Fashion
Thanks for looking Frank, David and Brian. I don't know about Marc Newsom, but they sure weren't designed by Jonathan Ive! Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola On Mon, Jun 4, 2012 at 7:22 PM, Brian Walters apathy...@lyons-ryan.org wrote: Quoting Daniel J. Matyola danmaty...@gmail.com: http://photo.net/photodb/photo?photo_id=15813371size=md Comments are always welcome. Any chance they were designed by Marc Newson? -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- 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: PESO: Tour of Somerville 4
Thanks, David. G Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola Thn On Mon, Jun 4, 2012 at 5:57 PM, David J Brooks pentko...@gmail.com wrote: Well done, good pan just the right amount of Frank, er, i mean motion blur. Dave On Mon, Jun 4, 2012 at 10:04 AM, Daniel J. Matyola danmaty...@gmail.com wrote: http://photo.net/photodb/photo?photo_id=15807039size=md Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: How much difference does optimizing the aperture make?
Don't forget that at about f8 diffraction effects will begin to rear it's ugly head. So if your maximum aperture is 4.0 diffraction will start to steal sharpness using that two stops down rule of thumb. It's worse the shorter the lens gets as the actual physical aperture is what controls diffraction, (and DOF as well). On 6/4/2012 6:22 PM, Larry Colen wrote: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est -- Don't lose heart! They might want to cut it out, and they'll want to avoid a lengthily search. -- 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: PESO - Droplets
Yeah. Flowers. Sometimes ya just need a break from all that gritty, grimy street stuff... ;-) Thanks to all who commented and looked! cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: David J Brooks pentko...@gmail.com Sent: June 4, 2012 6/4/12 To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: PESO - Droplets Frank does flowers.:-) Dave On Sun, Jun 3, 2012 at 9:42 PM, frank theriault knarftheria...@gmail.com wrote: Took this a while ago, but it reflects the mostly moist weekend we had around here: http://knarfdummyblog.blogspot.ca/2012/06/droplets.html BTW, if anyone knows what type of flower this is, I would love to know. Hope you enjoy. Comments welcome. cheers, frank -- Sharpness is a bourgeois concept. -Henri Cartier-Bresson -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: Subject: PESO - The New Book
Thanks, Don. There certainly is something appealing about a dad and his child looking at a book together. Glad you enjoyed. Thanks to all who looked and commented. Cheers, frank What can be asserted without proof can be dismissed without proof. -- Christopher Hitchens --- Original Message --- From: Don Guthrie shark50...@gmail.com Sent: June 4, 2012 6/4/12 To: pdml@pdml.net Subject: RE: Subject: PESO - The New Book Classic universal appeal photo. It certainly reminds me of childhood joy opening a new book especially a book unread since I was pretty much a public library kid. Message: 3 Date: Sun, 3 Jun 2012 02:32:38 + (UTC) From: knarftheria...@gmail.com knarftheria...@gmail.com To: PDML@pdml.net Subject: PESO - The New Book Message-ID: 2084271020.11104.1338690767832.javamail.se...@ap8.p2.fra.samsungsocialhub.net Content-Type: text/plain; charset=UTF-8 Hope this isn't a double post but when I checked the archives my post of this morning didn't appear, so we'll try one more time. Spotted in front of a local bookshop: http://knarfinthecity.blogspot.ca/2012/06/new-book.html?m=1 Hope you enjoy. Comments always welcome. Cheers, frank -- 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: How much difference does optimizing the aperture make?
IMO in this kind of discussion it just might be useful to play the role of devil's advocate. Most of my shooting not for my own pleasure is for Galia's class. When it started I was obsessed with technical quality - sharpness, etc. As time goes by, I am starting to understand that slightly (notice, not badly, just slightly) soft or slightly blurred shot with interesting moment caught on camera is much more fun than sharp but uninteresting photograph. So, I don't dwell too much into optimizing everything - I just shoot trying to catch a moment. Wearing my regular hat, I should say that I'd line up with Bruce Walker - each specific lens has its own character. E.g. my FA 50/1.4 is probably sharper than average wide open because according to its previous owner it was a hard decision to sell it to me over DA* 55/1.4 and it is kind of known that DA* 55/1.4 is rather sharp wide open. Another example is A 50/1.2 which I shoot wide open a lot just for the heck of it. I've noticed (yet to figure out this in a way rigorous enough to spot it before the shot) that sometimes it produces surprisingly sharp results although mostly it glows ever so slightly. Other than that, all my prime lenses are sharp enough for me from f/2.8 and zoom lenses are sharp enough from f/3.5-f/4.0 which is indeed a stop or so from the wide open (except A 50/1.2 but I wouldn't shoot it just for sharpness anyway). On 6/5/2012 01:22, Larry Colen wrote: My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. Well, yes. But given that you like bracketing, Larry, I suggest the following simple experiment. Set up a semi-serious shoot - I mean the one where you won't be shooting brick walls (I'd hate to suggest to shoot brick walls to anyone, especially for my friends) and configure your K-5 for 5 shots bracket. I reckon it should be possible to fix shutter speed and let the camera vary the aperture. I would even suggest to do it twice - off the tripod and hand-held. The studying of results may be worth your while. Boris -- 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: External Storage of RAW Files
On 6/5/2012 05:38, William Robb wrote: I've read reports of archival blue rays failing within startlingly short periods of time, and cloud storage is only as long lived as the company running the facility. IIRC, recently there was a cloud storage company in the USA that got shut down by the feds because some of their members were storing data they didn't own. I'm not sure if the golden users were able to retain their data or not, but there was certainly a period of time when that data wasn't available to them. I don't really think one digital storage technology negates the use of another one in this instance, since they are all much more failure prone than a piece of paper stored in a box under the bed. Bill, I am thinking that anything you do is as good as your keeping your watchful eye over it. Archival write-once media still needs occasional operation to see that it still works. HDD backup also needs renewal. So, I am thinking that if one keeps one's valuable (in terms of one's work) data in proper order (keeping backups up to date, exercising backup storage, etc) - one would be safe with very high probability. Although semi-jocular, I still find this page http://www.taobackup.com/ rather relevant to this discussion. Boris -- 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: How much difference does optimizing the aperture make?
I personally know by memory for the prime lenses I used the most, and out of personal experimentation in real world shooting -just because I like to know- although P mode with MTF program will get you there easily. For the non-chip lenses I guess a couple of clicks from wide open. The ones for me that I found is worth knowing (partly because I used them often) are the 43/1.9 (some magic happens at f4 and 5.6), 31/1.8 (f5.6), 21/3.2 (f8) and 15/4 (f8 or f11). In some cases finding those sweet spots rekindled some lens love. And I also know that I get slightly sharper images with the 35/2 than the 31/1.8 @f2, that the DA40/2.8 is slightly sharper at 2.8 than the 43/1.9 at f2.8 and that the 50/1.4 gets ok at f2; for the rest I don't care that much/don't know/don't shoot with them that often Photozone.de has charts that I found pretty accurate for the lenses I have; and I used them just to answer questions like is the 16-45 better @ 16 than the 12-24 @ 16? without having to test myself (which I won't do anyway) On Mon, Jun 4, 2012 at 6:22 PM, Larry Colen l...@red4est.com wrote: I was thinking about my quest for sharpness, and was considering trying to do some research into what the aperture sweet spot is for each lens, and was wondering if anyone had already made a chart of them. Then I wondered how much it really matters. I've heard a couple of stops down from wide open, anywhere between f/8 and f/16, and a couple other rules of thumb. I do know that on some lenses, particularly the FA50/1.4, that stopping it down a couple of stops from wide open, makes a huge difference. And I suspect that if you look on an MTF chart, you might be able to easily see the difference between f/4 and f/8, but is there a practical noticeable difference? There is also the question of sharpness at the critical focus distance, and overall sharpness. That a lens might be sharper at f/4 than f/16 at the focal distance, but with a lot more depth of field, more of the photo will be sharper at f/16, than at f/64. I'm primarily interested in answers based on personal, practical experience, rather than theory. My hunch is that as long as I'm not too close to wide open, or pushing diffraction limits, optimizing aperture for sharpness is not the most productive place to spend my time and energy. That I'm generally best optimizing the aperture for the picture, and not trying to optimize the aperture for MTF. -- Larry Colen l...@red4est.com sent from i4est -- 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. -- http://www.flickr.com/photos/ferand/ -- 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: An example of timeless design and style
Lovely car. I love the BW rendering. The HDR makes me wince a little bit, not my style. G On Mon, Jun 4, 2012 at 4:19 PM, Brian Walters apathy...@lyons-ryan.org wrote: Quoting Don Guthrie shark50...@gmail.com: My 1st Car was a '53 Chevy. When I saw this chevy on the street last week I was glad I had my camera primed and loaded. Two versions - one BW straight out of the camera and the second a more stylized version. http://donspix.posterous.com/a-60-year-old-example-of-timeless-style-and-d Warning- There are two pictures (2 tiny icons) please look at both. One would be rejected by National Geo and the other they wouldn't like anyway. As always comments are read and given all due respect. Great job with both versions. The HDR treatment is especially striking. The clean background really helps as Frank mentioned. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- 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. -- Godfrey godfreydigiorgi.posterous.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.
