uncle jerry Posted July 9, 2003 Share Posted July 9, 2003 what is the difference between old and new plus-x? Link to comment Share on other sites More sharing options...
lex_jenkins Posted July 10, 2003 Share Posted July 10, 2003 Dunno 'bout Plus-X but I've compared old vs. new T-Max 100 and Tri-X and don't see any significant differences. A densitomter might turn up something but I can't see it with my eyes, when scanning or printing. Some folks allege the new Kodak emulsions have less silver. I'm doubtful. Silver is pretty cheap right now. I'll bet there are other more expensive ingredients that go into making film. Personally, I think the only change Kodak made was to add purple to the film base just to give us something to fuss about. They probably got the purple cheaper than the old clear they used to add to the film base. Link to comment Share on other sites More sharing options...
richard_cochran Posted July 10, 2003 Share Posted July 10, 2003 The developing times are different. With some developers the new film takes longer, and with other developers, it takes less time. I don't know the reasons. <p> I just ran tests of the new versus old Plus-X in Rodinal. I found that the two films looked significantly different in the shadows -- the new film has more "punch" in the shadows. Maybe my old PX was slightly fogged from age. The new PX requires approximately twice as much time in the fixer to clear, a significant difference that could lead to nasty surprises for the unaware. It has different dyes (sensitizing and/or antihalation, I don't know which) that give a different color to the film base. In Rodinal, the new film takes about 15% less developing time, by my experiments, to produce a similar negative. Link to comment Share on other sites More sharing options...
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