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Today in Oshkosh [9/9] - "09 Another Mustang (wasn't this Dazzling Donna).JPG" yEnc (1/1)
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Today in Oshkosh [9/9] - "09 Another Mustang (wasn't this Dazzling Donna).JPG" yEnc (1/1)
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Today in Oshkosh [9/9] - "09 Another Mustang (wasn't this Dazzling Donna).JPG" yEnc (1/1)
On Fri, 27 Jul 2007 10:56:35 -0700, John Meyer
wrote: In article , ck (Just Plane Noise) wrote: =ybegin part=1 line=128 size=143599 name=09 Another Mustang (wasn't this Dazzling Donna).JPG =ypart begin=1 end=143599 [Image] =yend size=143599 part=1 pcrc32=0d34329d Say, Are you resizing these pictures before posting? Those are some very severe compression artifacts which destroy the image quality. And what lens are you using? The U-2 pictures especially show a lot of purple fringe. They're not only being resized and compressed, but I also have to do other stuff since many were backlit. The original image of the first U2 pic was 3872 by 2592, and the purple fringe is evident in it when I first cropped it to just the part of the image containing the U2 (about 16__ by 11__) , which I then resized to 1280 X 1024. The image was then compressed for posting. Still, it actually looks a bit better than the original in some respects. The problems you're seeing may be more a matter of what the 75-300 mm Sony (Minolta) lens can or can't do at full extension, with a particularly poor light situation, instead of compression being at fault. Got any tips for improvement? |
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Today in Oshkosh [9/9] - "09 Another Mustang (wasn't this Dazzling Donna).JPG" yEnc (1/1)
In article ,
Just Plane Noise wrote: On Fri, 27 Jul 2007 10:56:35 -0700, John Meyer wrote: In article , ck (Just Plane Noise) wrote: =ybegin part=1 line=128 size=143599 name=09 Another Mustang (wasn't this Dazzling Donna).JPG =ypart begin=1 end=143599 [Image] =yend size=143599 part=1 pcrc32=0d34329d Say, Are you resizing these pictures before posting? Those are some very severe compression artifacts which destroy the image quality. And what lens are you using? The U-2 pictures especially show a lot of purple fringe. They're not only being resized and compressed, but I also have to do other stuff since many were backlit. The original image of the first U2 pic was 3872 by 2592, and the purple fringe is evident in it when I first cropped it to just the part of the image containing the U2 (about 16__ by 11__) , which I then resized to 1280 X 1024. The image was then compressed for posting. Still, it actually looks a bit better than the original in some respects. The problems you're seeing may be more a matter of what the 75-300 mm Sony (Minolta) lens can or can't do at full extension, with a particularly poor light situation, instead of compression being at fault. Got any tips for improvement? Yeah, the purple fringing is a lens thing. A lot of consumer zooms have that problem. So I was curious about what lens. There are some software solutions that can reduce the effect. Here's a method for Photoshop: http://creativebits.org/photography/...urple_fringing The rest of what I see comes from over-compressing the JPG. I'm not too familiar with the Sony A100 and how it saves JPGs, assuming you're not shooting RAW. The lighting conditions are obviously poor! You can recover a lot more from a RAW file than from a JPEG which is already compromised by nature. I would say to avoid processing your JPGs as much as possible and to compress them less. Especially if you're posting in yEnc you can get away with bigger files. What a shame about that accident. Why risk a formation landing? What's the point? -- One is always considered mad when one perfects something that others can not grasp. - Ed Wood |
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Today in Oshkosh [9/9] - "09 Another Mustang (wasn't this Dazzling Donna).JPG" yEnc (1/1)
On Sat, 28 Jul 2007 14:20:27 -0700, John Meyer
wrote: Yeah, the purple fringing is a lens thing. A lot of consumer zooms have that problem. So I was curious about what lens. There are some software solutions that can reduce the effect. Here's a method for Photoshop: http://creativebits.org/photography/...urple_fringing Oddly enough, John, I just saw a comprehensive test of the Sony 75-300 online (Camera Laboratoes was the site, I think), and it showed no fringing AT ALL at 300 mm, but some at other lengths. Hmmmm...... The rest of what I see comes from over-compressing the JPG. I'm not too familiar with the Sony A100 and how it saves JPGs, assuming you're not shooting RAW. The lighting conditions are obviously poor! You can recover a lot more from a RAW file than from a JPEG which is already compromised by nature. The A100 saves JPEG, RAW, or JPEG + RAW (gotta get me one of them 8 GB cards!). I would say to avoid processing your JPGs as much as possible and to compress them less. Especially if you're posting in yEnc you can get away with bigger files. Thanks for the tips, John. What a shame about that accident. Why risk a formation landing? What's the point? I'm also wondering if part of the blame is with the lead plane for touching down before the other, although that wouldn't explain a head-to-tail collision since P51s can land side by side if need be on Oshkosh's runways. |
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