it's expose the "film" paper, whatever--in a camera
then you do a standard black and white reversal process: develop, bleach, re-expose and re-develop and fix
you end up with a positive image on the paper or film or whatever was in the camera--if paper, you have a positive image--if film, you have a transparancy for projection or put on a light box to have lit lit from behind.
See the other threads on reversal of black and white film in the bw film paper chemicals section..there are a bunch of people working on this now.
you can also do this with standard photo paper--like ilford multigrade--it's not panchromatic, so you can develop it under safelite--but it's slow--like ei=0.5 or 0.7 slow....
OH--Ilford has a pamphlet on their website about how to reversal process their films--this will work for this paper and other as well.
Last edited by johnielvis; 06-29-2013 at 09:12 AM. Click to view previous post history.