Please disregard my previous comment as my mail seems to be only coming in in dribs and drabs today so I didn't get the rest of the discussion when I wrote this. I have had dichroic fog appear and I felt it was a water quality issue. If caught in time on 4x5 I was able to just wipe it off the surface with the ball of my thumb, (sounds very crude but worked) On larger sheets of film (16"x20", don't ask) I removed it with a brief application of a weak solution of farmers reducer. One again, All the best Larry Cuffe On Wednesday, December 30, 2009, at 08:03AM, "Laurence Cuffe" <cuffe@xxxxxxx> wrote: >