[pure-silver] Re: Delta Pro 400 in DD-X
----- Original Message ----- From: "ERoustom" <eroustom@xxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Sunday, September 28, 2008 5:06 PM
Subject: [pure-silver] Delta Pro 400 in DD-X



Good evening List,
A few threads ago it was suggested I try to see how long a bottle of DD-X will last. So I bought a liter of it, and have used it on a roll of IDP400, and I'm quite satisfied with the results. These are initial findings, and I've yet to fully test my roll in the darkroom - my contact print look good. I exposed and processed by the label, and I've the negatives look like they'll be just fine for my condenser enlarger. This isn't the case with other films of traditional emulsions, or even with IDP100. The last roll os IDP400 I tried many months ago was souped in Clayton F76, and I remember a similar result. Is there something about IDP400 and it's Tabular Grain that makes it thinner, and less apt to clog shadows, or have I stumbled on a combination that suits my methods? 

Elias
Ilford probably did proper sensitometric tests to come up with their developing recommendations, who knows if Clayton did. Also, Ilford AFAIK uses a target gamma which is a compromise between diffusion and condenser values and adjusts the published film speed accordingly. Another also, some tabular gain films, Kodak 400T-Max for example, look thin but print fine, I don't know the reason for this but Kodak points it out in some versions of the T-Max instructions. You probably have pretty close to the optimum combination there. 

--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx 
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