Chris Rusbridge writes:

I have a Rondinax 35 and have noticed occasional white streaks going partway across the frames. This usually happens on several frames in a film, but not for all films. (In fact I suspect it doesn’t happen for second and subsequent films in one session…)

I have started a thread on the Film & Conventional section of Talk Photography about this, including some examples. No useful responses so far. Link:

Any ideas?