Re: Reducing a negative's contrast


Sam Wang (stwang@mindspring.com)
Wed, 17 Nov 1999 20:39:53 -0500


I would "flash" the print with non-image forming light to reduce the
contrast. Another way I've been doing is to print it twice: once for
the highlight and once for the shadow. Of course that means you have
to presoak the paper, which means it's not for those trying to
simplify things.

Sam Wang

>I've been doing a lot of cyanotypes from 16x20 enlarged negs
>lately. I'm aware of using dichromate in the coating and acetic
>acid in the first wash as cyanotype contrast controls. But, in
>the interest of speed and simplicity I always try to get a
>"perfect" neg. If my "aim" is too soft, a little selenium toner
>does wonders.
>
>Yes he has FINALY gotten to the question: If my enlarged neg is
>too contrasty is there any reasonable chemical treatment to
>decrease the negative's contrast by 0.1 to 0.3 DU?
>
>--
>Tom Ferguson
>tomf2468@pipeline.com



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