Reverse processing

[cyrus]

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]

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

Another very recent document
http://home.snafu.de/jens.osbahr/photography/reversal_processing/osbahr_reversal.pdf

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

[Kirk Keyes]

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]

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

[Ron Marshall]

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


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

[Jorge Gasteazoro]

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.