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Re: POP choices
Hi Carl,
This topic of pyro developed negatives to use both with POP silver and Pt/Pd
is very interesting to me because I've concentrated myself on this two
methods for contact printing and discussions about this matter are
practically absent.
I use BPF with Rollo Pyro from Lotus View Camera in Expert drums and the
results I got until this moment are not entirely satisfactory.
With normal developing times the contrast is simply not enough for POP and
I tried to give longer times but overall B+F+Stain increased to a level
that the exposure needed to UV is to long with the related problems.
I've tried as you recommend in "The New Platinum Print" : "strengthening
the developer and cut the developing time" but I didn't solve the above
described problem.
Perhaps I'm missing something concerning pyro development.
greetings
Manuel Gomes Teixeira
Punctum Studios
Portugal
EU
> From: Carl Weese <cweese@earthlink.net>
> Organization: Carl Weese Associates
> Reply-To: cweese@earthlink.net
> Date: Thu, 30 Aug 2001 11:37:26 -0400
> To: Alt-photo-process <alt-photo-process-l@sask.usask.ca>
> Subject: POP choices
>
> James,
>
> Assuming you will have access to a darkroom for film development (4x5
> film in trays doesn't take much space): FP4+ in PMK pyro will give you
> negatives you can print in POP silver, and then later print in Pt/Pd or
> on standard variable contrast silver paper. Pretty good combination. It
> gives high acutance if that's what you're after. As for obtaining it in
> Japan, just take a couple dry packaged kits from ArtCraft Chemical with
> you. Each will make 50 liters of working solution which is enough for an
> enormous number of 4x5's. The mixed stock solutions have excellent shelf
> life. Tri-X/PMK is another good pair. TMX and HP5 are more trouble
> getting enough contrast for POP processes. Of course observe proper
> precautions for handling pyro which is more toxic than more ordinary
> developers.---Carl
> --
> Web Site with picture galleries and workshop information
> http://home.earthlink.net/~cweese/index.html