[pure-silver] Re: Old Agfa 120 Brown Black Developer {120 (Potassium Version) print developer}
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 31 Jan 2007 19:00:38 -0800
----- Original Message -----
From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Wednesday, January 31, 2007 6:42 PM
Subject: [pure-silver] Re: Old Agfa 120 Brown Black
Developer {120 (Potassium Version) print developer}
----- Original Message -----
From: "Tim Eitniear" <timeitniear@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Wednesday, January 31, 2007 5:23 PM
Subject: [pure-silver] Re: Old Agfa 120 Brown Black
Developer {120 (Potassium Version) print developer}
Lloyd,
The Agfa paper did tone brown, but it was darker than I
wanted, but toned much more than I expected for not
being a warm tone paper. As far as the Bergger went,
the brown was what I expected, but not the whites. I
tried to find an example of what is in my head, but to no
avail. I imagine I just need some more practice and
tweaking my process. My negatives were pretty dense,
which may have contributed which may be one of the
reasons my whites were not what I expected.
Tim Eitniear
Chicago, Il
The amount of Potassium Bromide in a developer will
have a strong effect on the results of a toner. Generally,
the more bromide the greater the toning. Ryuji Suzuki
brought this to my attention. He referenced a patent by
Ira Current, who used to be with Ansco. There may be more
on Ryuji's web site, I haven't checked yet.
The patent refered to above is USP 2607686 available
from the U.S.Patent office site or Google Patents. What it
shows is that _cold_ sepia tones are produced when there is
a lot of bromide in the developer. This is just the opposite
of the conventional wisdom, namely that increasing bromide
results in yellower tones in toned images. The patent has
sample formulas.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your
account (the same e-mail address and password you set-up when you subscribed,)
and unsubscribe from there.
Other related posts:
