RE: Brush development of palladium prints. RE: Potassium Oxalate developer for Platinum printing

Thanks Don. I guess I'm lucky by printing Ziaypes - using digital
negatives that is. My usual emulsion shows 29 - 30 steps with the 31
step tablet (including full black at #1 and paper white in the other
end), but I have also used emulsions showing only 20 steps. It's nice to
use a process that is so much flexible (thanks to digital negatives) :)

Regards,
Loris.

-----Original Message-----
From: Don Bryant [mailto:dstevenbryant@mindspring.com]
Sent: 02 Mayıs 2006 Salı 05:08
To: alt-photo-process-l@usask.ca
Subject: RE: Brush development of palladium prints. RE: Potassium
Oxalate developer for Platinum printing

Loris,

>
Are you doing it for the sake of being able to use fresh developer for
every print or is it something else? (Such as different tonality? Local
development / tone variation?)
>

According to Sullivan and Weese in their book, 'The New Platinum Print',
brush development provides a method for getting a longer scale print
when dealing with contrasty negatives. That's why I tried it. I can't
say that I met my goal.

You could possibly use this method to alter local contrast by using
different dilutions of dichromate in the potassium oxalate but it would
be a tricky process to control precisely.

And one of the side effects of using this method is that the developer
is always fresh and contains no build up of platinum or palladium salts,
which is a very good way to test different contrast mixtures of either
the developer or sensitizer.
Received on 05/02/06-09:23:06 AM Z