Richard Sullivan (richsul@earthlink.net)
Wed, 19 May 1999 11:21:03 -0600
Lukas,
If you are doing a post stain be careful. I had gotten it into my mind that
the post stain was a "to completion" process and wasn't being too careful
about the times or concentration. You can post stain up the yingyang! You
can easily drive your negs up to 3 hr printing times.
--Dick Sullivan
At 11:45 AM 5/19/99 +0200, you wrote:
>Dear list,
>I have a few pyro negs which do not print well as Ziatypes or chysotypes.
>They look flared, with reduced contrast. They are all taken in bright
>sunlight, and are quite dense. What puzzles me is that I have many other
>negs which look very similar by inspection, and print perfectly. On closer
>inspection, however, they seem to have a somewhat excessive overall stain.
>Has anybody made a similar experience? How can this be prevented? What
>mistake did I do in taking or processing? Any suggestions?
>I want to reduce the stain now according to the instructions of Gordon
>Hutchings. He advises to keep the neg in a bath of acedic acid and sodium
>sulphite. My Question: it seems to me the sodium hydrogen sulphite should
>have the same effect. Is this true? And, is this procedure also possible
>with negs who are already some weeks/months old?
>Lukas
505-474-0890 FAX 505-474-2857
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