Re: JPEG's
Re: JPEG's
- Subject: Re: JPEG's
- From: Dave Camp <email@hidden>
- Date: Tue, 02 Jul 2002 22:11:30 -0700
on 7/2/02 9:49 PM, Anthony Sanna at email@hidden wrote:
>
I read in one of the posts that it's best to save digital camera files as
>
"raw" and not .jpg, because every time the file is resaved as a .jpg,
>
more information is lost. I don't have a digital camera, but began
>
wondering about multiple .jpg saves. Is .jpg max-quality 12 lossless, or
>
will multiple saves at 12 still result in image degradation?
Being a lossy compression scheme, saving an image again and again in JPEG
format will result in more and more degradation.
As for quality levels, there are no standards for this. Each JPEG
implementation can have a different and arbitrary scale.
For more general JPEG information, check out
http://www.ijg.org/
Hope that helps,
Dave
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