craygc
Well-known
I had a very similar issue with HP5 a number of years ago - see attached scan. This was 35mm film that had been frozen in its container but out of the box. I ended up in discussion with Ilford, even sending them my negatives, and the best we arrived at was that it was possibly static exposure. This is the same result you get if you rapidly pull sticky tape from the reel (it flashes; you can see it in the dark). Now, whenever I thaw out a brick of this frozen film, I waste a roll by quickly pulling out the film. If I can feel the "stickyness" I might repeat a couple of more rolls but typically trash the entire brick so as not to repeat the same problem again.
