I'd suggest a different workflow. Scanning 4x6 prints at 300 dpi should
produce uncompressed files around 5,000 KB. It's not a good practice to
save the scan as a JPEG before editing.
Finally, recompressing a JPEG by the same factor will often result in a
larger JPEG. For example, in a test just now I converted an edited
uncompressed 5 MB file to a 259 KB JPEG. I then reopened the JPEG,
re-edited it and re-saved it at the same quality level. The final JPEG grew
to 290 KB.
Further, saving the same original JPEG at the 35 quality level (on a scale
of 0-255 from highest to lowest quality) rather than 50, boosted file size
from 259 KB to 333 KB with no discernable improvement in image quality.
While this won't account for the extreme difference you noted, I will add
that Adobe image editing software exhibited peculiarities and bugs that
drove me to use Corel Photo-Paint instead. The main two problems I observed
were oversized JPEGs (Photo-Paint produces smaller JPEGs of equal or better
quality) and memory management errors, lockups and crashes.
-----------
Lex Jenkins
-----------------------------------------------------------------
"Don't worry about everything 'cause nothing's gonna be alright."
- Casey Lechmanski
=================================================================
Date: Mon, 6 Nov 2000 15:50:30 EST
From: DAVDOU9211@xxxxxxx
...prints are 4x6 and have been scanned at 300dpi...the file is saved to
disc as a JPEG...We then export it to Adobe Photoshop to edit it, and then
re-save it again as a JPEG file...
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