you will notice that the smaller file has more noise and artifact, from the
compression....
-------Original Message-------
From: Superspike
Date: 11/21/2011 4:20:28 PM
To: Adobe_Photoshop_Techniques@yahoogroups.com
Subject: [Adobe_Photoshop_Techniques] JPEG size and resolution vs file size
Hopefully someone in the group can clear up some confusion for me.
I am using CS5 but I think this apples to most versions of PS and PSE.
I set my image size and resolution and crop, example:
w-4"
h-6"
300ppi.
When I save as a JPEG, I an give a dialog box asking to select file size
from small to maximum. The example will yield the following results for file
size:
Large - 1.45 MB
Medium - 157 KB
Small - 85 KB
When re-opened in PS, all will still show as having the original settings of
4" x 6" x 300ppi and when zoomed to 100%, seem to have equal detail.
How can different file sizes contain equal amounts of information?
What am I missing here?
Thanks,
Bruce A.
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