From: Carl Weese (cweese@earthlink.net)
Date: 11/26/01-03:07:59 PM Z
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
--
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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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