"William Robb" <[EMAIL PROTECTED]> wrote: >From: "Mark Cassino" > >> I usually do a 1 minute pre-soak before developing. With 120 film >> the pre-soak water comes out dark indigo blue. I peel the film off >> the paper and cut the end with the adhesive on it - at first I thought >> I must of left some paper in there, but it doesn't look like it What >> puts the blue in the water - and if I were to not rinse, would it cause >> any probelms? > >What you are seeing is sensitizing dye. >There is no anti halation layer on 120 film, thats what the paper >backing does. >Once the film is exposed, the dye has done it's job. >If you don't rinse it off, it comes off in the developer, but is >absorbed by the chemistry.
I usually rinse a couple of times to get rid of most of the blue dye, but it's more superstition than anything else ;) I've never noticed any problems when I've forgotten to do it. -- Mark Roberts Photography and writing www.robertstech.com
