Too much stain, was Re: 8x10 FUJI B&W FILM

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From: Sandy King (sanking@clemson.edu)
Date: 07/25/02-09:14:44 AM Z


Don Bryant wrote:

>
>Not to beat a dead horse but I've quit post staining with PMK a long ago and
>I'm still getting too much stain for UV printing. I tray develop and I may be
>agitating too much.

PMK and tray agitation, especially with the long times needed to get
enough CI for PT/PD printing, will give a lot of general stain caused
by oxidation from developer exhaustion, augmented by aerial
oxidation. Both ABC+ and Pyrocat-HD should give less general stain
than PMK with long development times.

What about exposure? One of the things I have noticed is that most
alternative photographers, myself included, overexpose by quite a
bit. This happens because an increase in time of development to get
the high CI we need is also accompanied with most films by an
increase in effective EI. A film developed for 20 minutes will have a
much higher effective EI, perhaps twice as great or even more, than a
film developed for 8 minutes, other things being equal.

I have talked to quite a number of alternative photographers who
pride themselves on their " bullet-proof negatives." Well, you don't
need bullet-proof negatives to make good Pt/Pd, carbon, kallitype,
etc. prints, just negatives that have good shadow detail and that are
developed to the right CI for the process.

Sandy King

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