From: Judy Seigel (jseigel@panix.com)
Date: 11/29/01-07:51:55 PM Z
On Fri, 30 Nov 2001 jeffbuck@swcp.com wrote:
> Again (I'm quivering with rage), most densitometer's don't work w/ pyro neg's
> either!! Besides, I can't think of anything that would be more fulfilling
> that spending $600 on a densitometer.... See where I'm going here? Any
> suggestions? -jeff buckels
Jeff,
Sandy King has a long, lucid article titled "The Mystery and Science of
Pyro" in Post-Factory #4, from origins and history, through historic and
current formulas, the "Nature of Pyro," "Intensity of Stain," "Rotary
Processing," "Sensitometry," options in development, his own "Pyrocat HD,"
etc., etc., including the curves.
For the cost of the postage I'll send as "free introductory issue." E-mail
me offlist.
I don't know the Weese & Sullivan method, but I would assume you could
adapt the Post-Factory (Issue #1) white-card method to pyro. Expose, &
develop a 21-step in pyro, print in your chosen medium, then read your
pyro-developed negative against that. (Sandy: Yes? No?) But I note that in
the article Sandy says you can read the pyro neg in the blue channel of a
color densitometer, or with filter on b&w densitometer...
Judy
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| Judy Seigel, Editor >
| World Journal of Post-Factory Photography > "HOW-TO and WHY"
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| <http://rmp.opusis.com/postfactory/postfactory.html>
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