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Re: [OM] Re: archive slide scanning

Subject: Re: [OM] Re: archive slide scanning
From: Garth Wood <garth@xxxxxxxxxxxxxxx>
Date: Thu, 27 Jun 2002 19:22:57 -0600
At 09:45 AM 6/27/2002 -0700, you wrote:
>I would warn against saving ANY archival scans with the JPG format.  It is a 
>lossy format which compresses the pixels when saved by averaging. Then every 
>time you open a JPG and save it again, it compresses (averages) the pixels 
>once more.  files can quickly become "blocky".

Not necessarily true -- it depends on how intelligent your photo software is.  
Many software packages (Photoshop and ThumbsPlus are two examples that come 
readily to mind) allow the option of re-saving "with original quality" when 
using JPEGs or other "lossy" file formats.  No further compression occurs.  I 
archive a number of graphics that I'm working on for a (non-camera-related) 
project using JPEG, and have been doing so for several years now, with no loss 
of quality.

You just have to be aware, that's all.

Garth


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