Kate -- I have tried it according to the method described in the link Alessandro provides. It works, but not that well. I used a Tetenal 3-bath kit and replaced the colour dev with sepia toner. The resulting slides are way too dense and even several stops' overexposure doesn't improve things much. There is simply too much highlight density in the resulting slides and I think it has to do with the toner interacting with developed silver.Kate Mocak said:Is it possible to develop colour slides as black and white slides (or negatives)? If yes, what is the development process and formulas?
Jordan said:Note that you need to use a slide-developing kit to try this anyway, or home-brew a very active and solventy first-developer and a mild-ish bleach-fix formula. Regular B&W reversal processes use bleaches that absolutely destroy slide film (I have tried this too).
Jordan said:Preserving the order of Mikhail Garous' method (develop, tone, bleach) using B&W reversal bleach based on dichromate or permanganate does not work, as these bleaches also destroy the 'toned' positive. I found this out the hard way as well.
Kate Mocak said:My goal is to find use for the stack of colour slides which I'd bought before I started doing black & white photography . . .
Nick Zentena said:So why not crossprocess the C-41 B&W film into E-6? You'll end up with B&W slides I think.
rjr said:You will. But most C41-BWs are masked, the only one without the contrast masked I know of is Ilford´s Xp2s. This film tends to greening in E6 chemistry, you won´t get consistent and -worse- nice results.
you could follow the instructions given by Jordan and Allessandro - omit the second development and use a bleach instead (Thiorea).
rjr said:If you are interested I could dig out my protocols from this summer.
rbarker said:Considering the apparently marginal results others have seen, would it make sense to simply try to sell the color transparency film through a European eBay site to try to recover some of the original investment? Or, would it be possible to work a trade of some sort with your local photo dealer?
Kate, what exactly do you have, how old is it, and how has it been stored?Kate Mocak said:Ralf,
you're right, of course. Both options are feasible. But the recovery of the investment would be also marginal, if any at all, because the slides are well beyond their expiration date (though I'm sure they're OK because they've been untouched in the fridge). That's why I prefer to use them myself. Their B&W potential has higher value for me than what I'd get from selling them .
Kate, that film is practically brand-new! It'll keep for a long time. I recently used a bunch of Fuji MS100/1000 that expired in 2000 and it came out just fine. I have also been using up a large batch of Fuji Sensia from October 2003 that looks great also, and I bought a 100' roll of Velvia 50 (expired in 1998) for US$5 and am looking forward to trying it out...Kate Mocak said:10 rolls, originally packed, of Fuji Sensia 100, expiration date March 2004, always stored in the fridge.
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