C-41 -- noob question

MindofMel

MindofMel

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Planning on buying a Jobo - to dev portra at home etc.

Was just buying film and developer etc and it occured to me. If I buy C-41 Black and white film can I develop it at the same time as my C-41 colour film in the same drum? As it's all one standardised process. Or will the film residues or something interact and spoil one another?

If so, I may just go down the c-41 route for simplicity.
 
You can do both at once without any problems :)
 
A Vaguely related thought I had the other day, can I x pro proper B&W film in C41 if I skip the Blix and use regular fix instead?
 
In theory, don't see why you would want to though
 
Curiosity, no more. (Unless it does something cool to the negs, which I doubt!)
 
You can, but they will come out with insanely low contrast. Using C-41 developer and B&W fixer was one way of dampening down the contrast with Kodak Technical Pan film which was extremely contrasty unless used in specialist low contrast developers.
 
s162216 said:
You can, but they will come out with insanely low contrast. Using C-41 developer and B&W fixer was one way of dampening down the contrast with Kodak Technical Pan film which was extremely contrasty unless used in specialist low contrast developers.
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In that case we potentially have a winner - Adox CMS20 in C41, even in the weakest brew of caffenol I can get to work still has more contrast than a photocopier!
 
Try it with 1:300 Rodinal, I don't know the times as I've not done it before but Palm Labs do a specialist Tech Pan developing service using that as the low contrast Technidol developer that gave normal to slightly increased contrast is no longer available and the rodinal gives very similar results so I imagine it would work great with CMS20.
 
Surely C41 films are dye-based and use totally different chemistry from silver-based "standard" B&W film?
 
magicolor1 said:
Surely C41 films are dye-based and use totally different chemistry from silver-based "standard" B&W film?
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There are some dyes, but it is predominantly several layers of silver - sensitive to different colours, to give the colour image.
 
XP2 isn't truly black and white, it has a *very* slight colour to it. IIRC
 
magicolor1 said:
Is that also true for XP2?
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Yes. XP2 has dye couplers in it otherwise it wouldn't work in C41, you'd end up with transparent (well translucent purple!) negs. :thumbs:

I love XP2, my favourite film - far more versatile than regular B&W and has perfect tone and contrast IMO.

Kodak BW400CN is slightly finer grain but has higher contrast with much deeper shadows. Looks like T-Max.
 
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