Black and white slides

**tgtaylor** · 31-Jul-2016, 19:33

Originally Posted by photonsoup

A couple of posts into that thread dr5chrome said:

"This formula will produce less than satisfactory positives.

I wish I could enlighten.

There will be published reversal tips in the upcoming new edition of the Darkroom Cookbook / Anchel"

That was in 2008, does anyone have a copy of the edition? Does it actually have reversal tips?

The "tips" were published in the 3d edition of the cookbook - the 4th edition was published earlier this year. Last year I did several B&W reversal experiments using those tips and the results are given here: http://www.largeformatphotography.in...sing-with-D-11 Except for the apparent scriveners error in the solution ratio (1:3 which I found to be 3:1 - see the examples), the tips are valid and delivers good results.

Thomas

**ALVANDI Camera** · 31-Jul-2016, 21:10

http://www.mr-alvandi.com/technique/...ite-films.html

**Tin Can** · 31-Jul-2016, 21:24

Originally Posted by panoral

http://www.mr-alvandi.com/technique/...ite-films.html

Very interesting.

Thanks for posting your process.

**ALVANDI Camera** · 3-Aug-2016, 21:25

Originally Posted by Randy Moe

Very interesting.

Thanks for posting your process.

Thanks

**DSkorupka** · 2-Nov-2016, 02:33

After the semester ends I will try improving this acid-hydroxide process. http://www.filmlabs.org/docs/citric-...ide-bleach.pdf
Step 1 will be to replace Caffenol-C with XTOL and to replace lime juice with food grade citric acid.
I will start with the only obtainable high concentration stock, 12% via Amazon and water down to 9%.
From there I will see if I can't further reduce the concentration of H2O2 by increasing duration.

If the results are good I will move from short rolls of 35mm fp4
to "Galaxy" (Slavich) "120" (<100) positive (if you reverse process it) paper.