Fomapan R100 not developed as reversal

irivlin said:

Hope I don't offend but the negatives look *ultra* grainy. Is this how they will always turn out with this process?
When I've used the Fomopan development kit, the grain and gamma was very pleasing.
Ian

Click to expand...

I have also tried to develop Fomapan R as negative some years ago. I used dichromate bleach as first step, then BW developer and fixer. Result was negative, but low density, grainy and of low resolution, too. Seems like the bleach partially destroyed the latent image. It may be that the small grains of latent image are eaten by the bleacher and only big ones remain.

On the other hand, permangate bleach, reportedly used by studiocarter, destroyed latent image entirely for me. It's very aggressive soup, it even dissolves gelatine emulsion, I don't like it.

But I will give a try ferricyanide bleach, mentioned here, it sounds promising.

irivlin said:

Why could I not develop, then use C41 bleach, then fix? (Or, if using a C41 press kit, 1) Develop, 2) Use C41 bleach fix?
Incidentally, would a standard Tetenal "Three bath E6 kit" process Fomopan-R as a normal appearing black and white reversal photograph? (The kit has just there chemicals:- "First developer", "Colour developer" and "Bleach fix". No need for re-exposure during any of the steps.
Hope to hear back from you.
Thank you,
Ian
On photo.net as irivlin

Click to expand...

Because with any color chemistry, the bleach will turn all the silver to halides, and the fixer will remove it all. In B&W, whether it is reversal or negative, you need silver in order to have the picture on your film. In color film, this is done by using dyes, and afrer forming them, the silver must be removed from the film. If you put any black and white film in a color process, this results in a blank film. The bleach in b&w reversal works differently - it removes metallic silver, but does not affect the silver halides in the emulsion.

Samu said:

any black and white film

Click to expand...

Well, any silver-image B&W film. XP2 Super and the (discontinued?) Kodak C-41 B&W stocks formed a black dye image and can be processed by reversal (though the base color and/or orange mask will interfere with projection viewing, a bit).