I would appreciate any advice on the following problem. I Have recently had a problem with a very fine staright line of light density visible along the length of a 35mm film (FP4+ & Delta 100). The The line has not always appeared at the same place in each roll of film in which the problem has occurred. Its trace can be seen between the negs too. The films were processed in a small tank in a quite normal manor. On close inspection of the emulsion the line is clearly not a scratch. I guess it may be friction related but would appreciate any opinions.(posted 9123 days ago)thanks