B/W processing questions

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camera_wizard
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B/W processing questions

Post by camera_wizard »

I recently bought a russian processing tank and chemicals from Russian Cine Cameras.

The problem that I am experiencing, though, is with the processing times.

First, the processing kit was a black and white reversal OCH-S-PRO. The instruction manual is here.

I know the basic steps of processing reversal B/W film. I don't know the processing times for the chemicals. Mainly, because all chemical times for kodak plus-x and tri-x (both new and old versions) deviate wildly from the times given in the OCH-S-Pro instructions.

Can these films even be processed with this kit?

And what about Fomapan?

What times do I use?

Anything I should note?

Thank you,
Dylan
christoph
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Re: B/W processing questions

Post by christoph »

hiya,

it's difficult to give sound advice without knowing how the OCH-S-PRO kit works.

generally different chemical formulas result in different processing times. the kodak formulas are optimized for machine processing, so the times are very short (i'm still trying to optimize them for hand processing).

the only critical timing is the 1st developer.. experiment with that until you have pleasing results. all the other times are "to complention" so it doesnt really matter if you leave it in a bit too long (although the times given seem to be on the high side, specially the wash times).

if you can measure the exact weight of the chemicals in the packages and their color and structure (or even better chemical formula ;) it would probably b possible to give more precise information.

++ christoph ++
aj
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Post by aj »

The chemistry dictates the times. You adjust for personal preference using the first samples...

Best start with clips of 0,5 meter or something.

The Fomapan needs special care as the backing gives complications.

Why not ask the seller?
Kind regards,

André
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steve hyde
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Post by steve hyde »

....tests are the only way to find out.

I process Kodak 7266 and 7265 in D76. I use 1:1 proportions and then double the suggested processing time for contrast since I don't bleach for reversal. Then I transfer the negative films to tape.

here is a roll to look at:

http://www.steve-hyde.com/D76.mov

Steve
camera_wizard
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Post by camera_wizard »

Thanks for all the help! I will be running some tests before I try to process entire rolls of film.

Thanks again.

Dylan
ccortez
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Post by ccortez »

Steve --

Is that bleach damage dancing all over your highlights?

- c.
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