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From: jim@noscvax.UUCP
Newsgroups: net.rec.photo
Subject: Re: fading memories
Message-ID: <581@noscvax.UUCP>
Date: Mon, 13-Aug-84 02:42:51 EDT
Article-I.D.: noscvax.581
Posted: Mon Aug 13 02:42:51 1984
Date-Received: Tue, 14-Aug-84 19:20:12 EDT
References: <3164@decwrl.UUCP>
Organization: Naval Ocean Systems Center
Lines: 13

> There was some recent discussion of dye stability in color printing.
> I have one question.  What about the dyes in slide film?  I use slide
> film exclusively, printing my favorite shots.  Are the slides subject
> to fading as well?
>                                Vick Bennison

Yes.  As far as I know, the dyes used in chromogenic materials such as Koda-
chrome, Ektachrome, Agfachrome, Fujichrome and most other "chromes" are some-
what unstable.  Chromogenic materials also contain residue color couplers that
discolor with time.  (I was going to say more, but it's almost 3 am).  The bot-
tom line is: Kodachrome dyes have good dark stability.  Ektachrome dyes have
better light stability.  Cibachrome dyes have better light and dark stability
than either of the other two.  -jim@nosc (zaun)