[pure-silver] Re: What is this old film?
- From: Richard Knoppow <dickburk@xxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 30 Apr 2007 23:58:01 -0700 (GMT-07:00)
-----Original Message-----
>From: janet ness <nessj@xxxxxxx>
>Sent: Apr 30, 2007 8:48 PM
>To: pure-silver <pure-silver@xxxxxxxxxxxxx>
>Subject: [pure-silver] What is this old film?
>
>At a camera sale last weekend I bought a box of 4x5 Kodak Direct Duplicating
>SO-015 film. Can I use this film to make enlarged negatives? Can it be used
>under a safelight, although the box says "only in total darkness." Can it be
>developed in Dektol? The film is dated Feb. 1975. It may be useless, but it
>was cheap.
>
>Janet Ness
I am away from my references but I believe this is a direct positive film
working on the basis of being pre-fogged to the degree that the desired
exposure drives it into the reversal zone of the characteristic curve. I think
it was developed in a normal active developer like Dektol. I may have a data
sheet for it. I will look when I get home.
I have no idea of how stable the stuff is, you will have to test it to
find out. The data sheet will have exposure information in it. It will also
have data on spectral sensitivity and whether a safelight can be used.
--
Richard Knoppow
dickburk@xxxxxxxxxxxxx
Los Angeles, CA, USA
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