From: Sandy King (sanking@CLEMSON.EDU)
Date: 02/11/02-08:31:15 AM Z
Judy Seigel wrote:
>
>I've found that "contrast control" in a lot of VDB formulas, tho I don't
>remember one in particular.
I have only used the classic vandyke formula, the one described by
Bob Schramm as VDB-1 in Issue #1 of Post-Factory. What other formulas
have you used successfully?
> I also found that it didn't work, but it
>didn't work differently for me than it didn't work for you. That is, the
>dichromate in the sensitizer, even a tiny bit, DID increase the contrast
>but simultaneously stripped the highlights. Contrast was gross, and
>exposure time much longer.
Actually I think we are describing the same result. I think you will
find that if you do the test again it did not give a real increase in
contrast but an apparent one due to the dramatic increase in exposure
times. I suspect this will be so because several others have
confirmed to me that this is the result they had from putting
dichromate in the sensitizer.
>
>My hunch however is that it may have worked for someone who managed to add
>even less dichromate.
Maybe, but my hunch is that the method just does not work. I tried
lots of variations on the theme and saw no result.
However, I am convinced that there must be some way to reduce
contrast with VDB-1 so further experimentation would be in order.
Sandy King
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