>Everytime you open and save a JPG file it is 1
> generation away from the original.

Not everytime. Your statement is true only if one applies the JPG
compression algorithm when saving susequent generations. If a JPG is
saved without reapplying the algorithm, the new file is identical to
the prior generation. So, when saving an existing JPG to different
location, for example, no loss is incurred.

Scott





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Scott R a y
Yakima, WA
mryakima at gmail dot com