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Old Aug 6, 2005, 10:17 PM   #1
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Question: I know that everytime you save a jpeg image, the compression algorithms re-evaluate the image and, in the long run, can do serious damage to your image quality.

My question is, what happens when you are saving .PSD files? When I save jpeg source files in a layered PSD file, are my images being degraded? My source files are jpeg, and I leave them untouched so that I can return to them and start again if need be. When I save PSD, I am not given an option as to how the embedded files are treated. Should I save first ast TIFF?

It is bad enough that by the time I get my images off my camera, they have already been sharpened and compressed. I'd like to know the best way to work with the images and preserve quality throughout the editing process.

Regards,

Tom, on Point Pelee, Canada
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Old Aug 7, 2005, 12:40 AM   #2
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Adobe PSD does not compress, there is no loss from one save to another.

The loss in JPG occures when the file is re-compressed each time a save is made.

Peter.
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Old Aug 7, 2005, 12:57 AM   #3
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Thanks, Peter. That is a relief.

Cheers,

Tom, on Point Pelee, Canada
http://tomoverton.myphotoalbum.com
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