jeffbuck@swcp.com
Date: 11/26/01-03:44:41 PM Z
Well, Gordon Hutchings urges the afterbath to increase image stain without
increasing general stain. I had taken this at face value, by the way, but I
then heard somewhere that many workers in pyro/platinum skip the afterbath to
keep exposure times halfway under control. I sure don't want to give up
the image stain enhancement for no reason. Sodium metaborate is cheap. -jb
Carl Weese <cweese@earthlink.net> said:
> Christina,
>
> Lots of web stuff has been very slow the past few days, I've gotten some
> really delayed emails coming through.
>
> I know that Sandy is a careful worker so I'm confident that he saw increased
> overall (undesireable) fog due to afterbath. So it may be the problem for
> Jeff too. My point isn't that there's never a problem with this, but that
> the tests Herbst ran are valid only in his situation. Sandy seems to have
> had similar results, others including me have not. The stain I get is highly
> proportional, just a little in the areas of low density, lots of color where
> there's lots of silver density, which is just what we want. When I've
> skipped the afterbath there's no visible change in the stain in the shadow
> areas (indicating that the afterbath does not cause overall stain in my
> setup) but less stain in the highlights, meaning less of the contrast I want
> for Pt/Pd printing.---Carl
> --
> web site with picture galleries
> and workshop information at:
>
> http://home.earthlink.net/~cweese/
>
> NEW PICTURE GALLERIES: Flags and Pumpkins: Halloween 2001
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>
> ----------
> >From: "Christina Z. Anderson" <zphoto@montana.net>
> >To: alt-photo-process-l@sask.usask.ca
> >Subject: Re: Dense or Density
> >Date: Mon, Nov 26, 2001, 2:46 PM
> >
>
> > (btw the post I sent on this I sent a couple days ago and it just came
> > thru...i wonder why)
> > Very true, Carl, and Brian Ellis agrees with you in our offline
> > correspondence on PMK. However, the original post dealt with a problem of
> > overdensity and long printing times, so I assume that his "mileage may
vary"
> > situation may warrant checking into this idea as a possible problem, along
> > with the other good suggestions he has already received here before my
post
> > came thru! And I mentioned it specifically because Herbst was addressing
> > the platinum issue with PMK.
> > Also, it is probably misleading to call it "added base plus fog"
> > because, as Brian pointed out, the clear areas of his negs and the rebates
> > were still clear even when afterbathing. What I actually understood from
> > Herbst's lecture is that it added density to the whole neg where there was
> > some density already but not proportionally, so in essence you can have a
> > neg that has clear edges and yet has added, nonessential density which
adds
> > printing time. But far be it from me to suggest I know anything about
> > platinum printing, not being my area of expertise. I just know PMK in
> > relation to silver printing.
> > Chris
> >
>
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