From: Carl Weese (cweese@earthlink.net)
Date: 01/15/02-02:51:15 PM Z
Wendy,
Crane Cover 90# Natural White is a fine starting point. If you are starting
out, don't jump around changing papers and adding that variable. Get to the
point that your results are consistently good before experimenting to see if
some pictures will be better with another paper. Avoid the other colors of
Crane cover since many find they give erratic results, and that's just what
you don't want especially while learning the other basics of the process.
I'm not a trained chemist. I understand that ferric oxalate "ages" and goes
bad when the ferric turns to ferrous, and that the same thing happens much
more rapidly in the coated sheet with combined sensitizer. It seems likely
that any contrasting agents in the coating will accelerate the process
farther, but I'll let those with chemical training deal with those answers.
---Carl
--
web site with picture galleries
and workshop information at:
http://home.earthlink.net/~cweese/
----------
>From: Wendy Gollihue <wgolli@flash.net>
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Papers
>Date: Tue, Jan 15, 2002, 1:41 PM
>
>
> Alot of persons around me are using the cranes. I usually go the road less
> traveled and experiment at great costs. In this process, i'm wondering if I
> should just join the club.
>
> Could you briefly tell me what chemical reactions may be going on?
>
> Thanks alot for your help.
>
> Wendy (TX)
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