Eastman Double X Reversal Process? Yes-But....
I do quite a bit of reversal processing of black and white film (in other words positive black and white slides). So I wondered whether Double X would reverse process. I shot a couple of rolls to find out.
With the first roll I did test shots at ISO 160, 250 and 400. Only those shot at ISO 400 had barely enough density to scan. I shot the second roll at ISO 400 but I increased exposure compensation by up to +2 on some shots like the one above.
I use the Rodinal process described in a paper written by Jens Osbahr titled "In Memory of Scala"-You can search it out on the web. I tried the formula variations described for Scala and for Ilford FP4. So here are my initial findings.
Yes the film will reverse. The positives tend to be thin. I would recommend shooting at 1000 ISO with XX. With positives just reverse everything you know about controlling negative density. Although the positives tended to be thin, I believe this could improve by shortening development time of the first developer and also Reducing the KCSN or leaving out of the formula altogether.
Having said all that, I succeeded in answering my own question-Yes one can produce a black and white positive with Double X-But there are much better films out there for doing so. Double X is best utilized as a black and white negative film.
Eastman Double X Reversal Process? Yes-But....
I do quite a bit of reversal processing of black and white film (in other words positive black and white slides). So I wondered whether Double X would reverse process. I shot a couple of rolls to find out.
With the first roll I did test shots at ISO 160, 250 and 400. Only those shot at ISO 400 had barely enough density to scan. I shot the second roll at ISO 400 but I increased exposure compensation by up to +2 on some shots like the one above.
I use the Rodinal process described in a paper written by Jens Osbahr titled "In Memory of Scala"-You can search it out on the web. I tried the formula variations described for Scala and for Ilford FP4. So here are my initial findings.
Yes the film will reverse. The positives tend to be thin. I would recommend shooting at 1000 ISO with XX. With positives just reverse everything you know about controlling negative density. Although the positives tended to be thin, I believe this could improve by shortening development time of the first developer and also Reducing the KCSN or leaving out of the formula altogether.
Having said all that, I succeeded in answering my own question-Yes one can produce a black and white positive with Double X-But there are much better films out there for doing so. Double X is best utilized as a black and white negative film.