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Photo Forum / Film Photography / Darkroom / April 2005Developer Additive
Back in the 70's I used a developer additive called Factor 8. It allowed exposure of Tri-X at EI 6400 with quite good shadow detail. It long ago disappeared from the market. Does anyone have any idea of a formula to obtain these results? I doubt that it really gave me 6400, but 3200 would seem like a realistic figure. As I recall I used it with HC-110 B and had to double the developing time I normally used for EI 400. It seemed to restrain the contrast build-up more than anything else. > Back in the 70's I used a developer additive called Factor 8. It allowed > exposure of Tri-X at EI 6400 with quite good shadow detail. It long ago [quoted text clipped - 3 lines] > to double the developing time I normally used for EI 400. It seemed to > restrain the contrast build-up more than anything else. You're a f.cking moron......... > > Back in the 70's I used a developer additive called Factor 8. It > allowed [quoted text clipped - 11 lines] > > You're a f.cking moron......... Maybe, but at least he doesn't suck dick for beer money 'cause he lost his job proofreading grad students' papers... "Maybe, but at least he doesn't suck dick for beer money 'cause he lost his job proofreading grad students' papers..." So that's your problem! I don't know what what in this product but there were a number of other so-called develoer improvers that were solutions of Benzotriazole or similar organic anti-fog agents. It may also have contained something like a Hydrazine compound which can be used to boost speed at the cost of increased grain and fog. For the most part these products didn't really work very well so fell by the wayside. There was another caled Crone I think, that was definitely Benzotriazole. -- Richard Knoppow Los Angeles, CA, USA dickburk@ix.netcom.com |
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