[pure-silver] Re: Tray development and fog
- From: "Michael Healy" <emjayhealy@xxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sun, 15 Jan 2006 09:11:24 -0700
Thanks, Richard. I'll test for light. It's my 2nd bathroom, and I have to seal
it up for every
use. It seems pretty dark to me, and I've never had problems fogging 4x5 color
transparencies when I load them, but maybe I was sloppy. Anyhow, with FX2 I'm
working
on 16+ minutes' developing time. Add presoak and stop and - a long time.
Oxidation can promote fog? That was my first thought, because I was only using
500-
600 mls of liquid in an 8x10 tray, and got to wondering whether perhaps the
sheets
werefloating up between agitations. But because I've always understood that
oxidation
depletes developer, I considered this unlikely. Maybe I was stuck thinking in
terms of
Dektol. What goes on, then, that oxidation can fog film?
Mike
On 15 Jan 2006 at 1:25, Richard Knoppow wrote:
Date sent: Sun, 15 Jan 2006 01:25:18 -0800 (GMT-08:00)
From: Richard Knoppow <dickburk@xxxxxxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Tray development and fog
Send reply to: pure-silver@xxxxxxxxxxxxx
<snip>
> The most likely reason is leak light. It takes a long time for
> your eyes to become completely dark adapted, half an hour minimum.
> After that you may see leak light that was invisible before.
> While some developers are worse than others for chemical fog from
> oxidation I can't imagine one which would produce as much as you
> are suggesting you got.
> Of course, the proof is to use some other developer. I would
> suggest a conventional developer like D-76 or ID-11. Both come in
> one liter packages which is cheap enough for testing. Another
> test is to expose two sheets of film. Leave one in the darkroom
> for the time it takes you to tray develop. The develop both in
> the tank and see if there is fog on the one left out.
>
>
> --
> Richard Knoppow
> dickburk@xxxxxxxxxxxxx
> Los Angeles, CA, USA
=============================================================================================================
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:
