Reverse processing

**cyrus** · 4-Apr-2008, 05:15

I have a book somewhere that gives the chemistry for reverse processing (turning a negative into a positive) .... now, which book could that be? Anyone tried this at home recently? I think it involved dichromate, which I have.

**Emmanuel BIGLER** · 4-Apr-2008, 05:21

There are some informations about the reversal process on Ilford's web site
http://www.ilfordphoto.com/applicati...nload.asp?n=11

Another very recent document
http://home.snafu.de/jens.osbahr/pho...r_reversal.pdf

Plus many discussions like this one
http://www.apug.org/forums/archive/i...p/t-46994.html

**Kirk Keyes** · 4-Apr-2008, 08:04

Reverse processing. I thought you meant fixer first, then stop, and finally developer. I accidentally did that once. I don't recommend it...

**Helen Bach** · 4-Apr-2008, 09:02

...unless you want really slow film for really long exposures. (post-fixation physical development)

**Ron Marshall** · 4-Apr-2008, 09:47

Off topic, but the Dr5 site has examples of various reverse processed films, using their process.

http://www.dr5.com/Filmreview.html

**Jorge Gasteazoro** · 4-Apr-2008, 10:40

Yes dichromate is used to bleach the latent image, re expose to light and redevelop. You can find a couple of very good articles in unblinkingeye.com.