Re: Pyro negs and stain


Gary Miller (gmphotos@earthlink.net)
Wed, 19 May 1999 11:39:38 -0700


Speaking of the difference of shooting outdoors as opposed to shooting in
the studio, why are the outdoors negatives so much more dense. If I am
taking a meter reading both inside and outside shouldn't the negatives
ultimately be the same density if I am rating the film at the same ASA. I
know that Carl has mentioned the difference between using a spot meter
reading outdoors as opposed to a flash meter reading in the studio. But
shouldn't it all be relative?My shoots from outside are much more dense and
stained than my studio shots.

Gary Miller
----- Original Message -----
From: Richard Sullivan <richsul@earthlink.net>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Wednesday, May 19, 1999 10:21 AM
Subject: Re: Pyro negs and stain

> 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
> <http://www.bostick-sullivan.com>http://www.bostick-sullivan.com
> http://www.workingpictures.com
>



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