From: John Campbell (tojohn@texas.net)
Date: 01/25/02-03:13:54 PM Z
Hi, Manuel-
As I write this to you, I am just shutting down my Gecko UV box, finishing a
long session of printing "digitized" pyro negs onto Cent. POP. I develop in
Pyro (ABC or Rollo) with a slightly long development time. I skip the second
Metaborite bath, having learned the advantages of that from folks on this
list. I do no more digital editing (in Photoshop) than absolutely necessary
(typical darkroom stuff)-and then I duplicate the background layer, switch
to the Multiply mode on the new level, and drop the opacity down to the
range of 50%. Then I invert to a negative and store the original scan size
as a Genuine Fractals file so that I can open it to any size I need. That's
what I do this week, mind you. Next week maybe I'll do something else. You
can get a look at a few samples of this process at www.photogecko.com. I do
coating processes, also-but everything on the site happens to be POP.
Having said all that-I have no idea whether your process is totally analog
or partly digital, so I may not have said a darned thing that was helpful or
even made any sense. That's okay, I enjoyed saying it anyway. I'm sure you
know that contrast falls of in proportion to development time with POP. I
find it essential to step test every negative. My exposure times run from
three minutes to about fifteen On average exposure runs six to nine minutes
(that I can guarantee-I just check it!).
Have fun with it, and keep me posted.
Toodle,
John
www.photogecko.com
-----Original Message-----
From: Manuel Gomes Teixeira [mailto:PunctumStudios@netc.pt]
Sent: Friday, January 25, 2002 2:07 PM
To: alt-photo-process-l@usask.ca
Subject: Pyro POP
Hi all,
Does someone have experience in printing Pyro negatives with Centennial POP
?
My experience says that a pyro negative perfectely matched for platinum
does not have enough contrast for POP , unless if I print it with a low
level light source for very long times (12hrs to 24 hrs) to increase
contrast.
I can not quantify the pyro negatives contrast because I do not own a
colour densitometer.
The idea is to produce PYRO negatives for silver printing with VC paper ,
Pt/Pd and POP.
Thanks
Manuel Gomes Teixeira
Punctum Studios
Portugal
This archive was generated by hypermail 2b30 : 02/15/02-11:47:41 AM Z CST