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Jon O'Brien
{K:11321} 8/28/2004
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Hello, Shahriar -
The value of the jpeg format is that it compresses the image information so as to allow much smaller file sizes than, say, tif or bitmap. Even better - most image software allows one to set the degree of compression. But jpeg is a "lossy" format - every time you re-save a jpeg you lose some of the image information, and the higher you set the compression the more information is thrown away. If you look along where the top of the bridge deck meets the blue sky in this picture you'll see the "compression artifacts" I noted earlier. These start showing up when too much information is lost through the saving and compressing process. Usefilm actually allows for fairly substantial file sizes - much larger than this one. The file size to be concerned about is the one that is shown in Explorer, not the one that your photo manipulation program shows when the image is actually open and being worked on. Also - if you are saving images multiple times you should do all your work in a losssless format (tif is preferred) and only save your final exhibition copies in jpeg.
Hope this helps. Thanks for the background on the bridge. I find old buildings very interesting.
Jon
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Shahriar Broumand
{K:692} 8/27/2004
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Hi Jon,
This is the old bridge that connected the Florida Keys. They stopped using it in the 30s I believe and there now is a more modern bridge that goes all the way to Key West. 90 minute drive on the Ocean! Hence the name Dead Bridge.
I would love to better understand your comments around compression. When I get my photos developed they are put on a CD. The size of these pics are usually huge so I have to compress them by converting to JPEG as we are limited size-wise on usefilm.com. Any suggestions?
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Jan Symank
{K:22030} 8/25/2004
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Very nice Shariar
The palmtree is a good foreground
Bravo and
Khodhfez
Jan
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Jon O'Brien
{K:11321} 8/25/2004
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Definitely one of your better ones. I think the composition here is very well balanced. I would have liked to have seen an explanation of the shot (I don't understand the title, for one thing) and I again notice compression artifacts. If you look at other images on usefilm of this size (640 pixels on the long axis) you'll see that the file sizes are often 3-4 times larger than yours.
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Adelino Barreto
{K:12661} 8/22/2004
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Excelent photo with very good composition and colors.Best regards.
[7]
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Gabriella Carta
{K:22879} 8/22/2004
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wonderful!
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