RE: Pyrocat-HD for alt printing?

Donald, I haven't used Pyrocat-HD for alt. processes yet (because I use
digital negatives, not in-camera negatives) but on every publication or
article I've read it was said that pyro stained negatives takes longer
to print - because the color is much more opaque to UV light (even if it
seems very thin to you). In your case the exposure takes around 2 stops
longer, I'm sure there will be pyro in-camera negative users that will
approve/disapprove this difference.

Regards,
Loris.

-----Original Message-----
From: donald ciccone [mailto:dsciccone@verizon.net]
Sent: 16 Ağustos 2005 Salı 06:55
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Pyrocat-HD for alt printing?

... I recently tried making a Vandyke
(brown) print but found my exposure times were very long (30 minutes or
more). The UV source is a bank of 18 inch blacklight bulbs ("350
 Blacklight" by Sylvania). I have used the same printer with non-pyro
negatives and typically get exposure times for Vandyke prints in the 5-8

minute range. Ideally, I would like to get more reasonable exposure
times
for pyro-developed negatives as well (possibly 10-15 minutes). Any
suggestions how to achieve this or do these negatives simply require a
stronger/different UV source? The pyro negatives do not appear dense or

blocked up when viewed on a light box. Thanks for any assistance.
Received on Tue Aug 16 01:14:16 2005