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From: wally@cornell.UUCP (Wally Dietrich)
Newsgroups: net.rec.photo
Subject: Re: Color balancing
Message-ID: <5485@cornell.UUCP>
Date: Fri, 14-Oct-83 08:47:52 EDT
Article-I.D.: cornell.5485
Posted: Fri Oct 14 08:47:52 1983
Date-Received: Sun, 16-Oct-83 10:08:34 EDT
References: <564@avsdT.UUCP>
Organization: Cornell Computer Science
Lines: 11

Print processors typically balance colors prints so that the average shade
in the print is grey.  (A machine takes the average color over the entire
frame and then sets the filtration.)  As you might expect, this works fine 
for average photographs.  At the better processing labs, a human looks at 
the final prints and decides whether the color balance is right.  That's
one reason Kodak's prints usually look better than the ones from the corner
drug store.  I've seen articles in Pop Photo about filtration for color 
printing but don't remember the details since I can't afford to do it
myself.  Have you looked for any books on color printing?

                                Wally Dietrich