[pure-silver] Re: Developing Plus-X in Rodinal 1+100
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 17 Dec 2008 12:24:23 -0800
----- Original Message -----
From: titrisol
To: pure-silver@xxxxxxxxxxxxx
Sent: Wednesday, December 17, 2008 1:00 AM
Subject: [pure-silver] Re: Developing Plus-X in Rodinal
1+100
So a better test would be to expose a roll of film
and then develop snippets for 10, 20, 30, 40, 60, 120
minutes and see if when the densitites becomes more or less
the same as the previous time?
The problem is duplicating the exhaustion of the
developer. There is probably not enough film in a clip test
to change developer activity. The idea is to develop a
normal amount of film for the time that is supposed to make
the developer completely inactive and then try developing
more to see if it develops at all. The second film can be a
clip test. My bet is that a small quantity of Rodinal would
loose substantial activity after developing a roll of 120
but will still develop to some degree. A bit of fogged film
will do nicely for the second test. I think the original
poster was saying that the diluted Rodinal would develop
film up to a certain degree but would not increase density
or contrast when time was extended beyond that. The best
test of this is simply to develop two rolls of film each
with fresh developer but extend the time of one well beyond
the other and well beyond the time at which the developer is
supposed to stop developing.
If the idea is that the developer would be dead from
aerial oxidation a clip test would do where the developer
was left in a tank, or agitated in a tank with no film for
the given amount of time.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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