Re: Pyro and rotary agitation question

• To: alt-photo-process-l@sask.usask.ca
• Subject: Re: Pyro and rotary agitation question
• From: Carl Weese <cweese@earthlink.net>
• Date: Tue, 14 Mar 2000 16:15:32 -0500
• Comments: "alt-photo-process mailing list"
• Organization: Carl Weese Associates
• References: <38CE99D2.773E6FE8@flint.umich.edu>
• Reply-to: cweese@earthlink.net
• Resent-message-id: <0FRF009QMKEVT2@duke.usask.ca>
• Resent-reply-to: alt-photo-process-l@sask.usask.ca

Darryl,

I'm afraid I don't know what a "standard metal tank" for rotary
processing of 4x5 film is. Different agitation seems to make a big
difference with the ABC+ (rollo) formula so whatever this equipment is
could easily want different times from the Jobo system. And 20% or 25%
variance from one worker to another is perfectly normal anyhow.

If negs print ok on _graded_ number two, they are probably too soft for
ideal printing in Pt/Pd. A really good crossover negative prints in
Pt/Pd, or on _variable contrast_ silver paper with little or no
filtration, but this negative tends to be quite a bit too contrasty for
standard graded number two. The pyro stain prints softer on VC than on
straight graded.

---Carl

-- 
Workshop info and online galleries at:
http://home.earthlink.net/~cweese/

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