Werid gap on Svema thin films using Zorki 2C

Hi all,


I’m not sure whether this belongs in the analog equipment section or here, but I’d appreciate your advice.

Over the past few months, I’ve been shooting Svema films from Ukraine, including the two movie stocks NK-2SH and A-2SH. Overall, I’ve had great results — both films deliver excellent contrast and a cinematic look.

However, I’ve noticed a recurring issue: the gaps between frames are unusually wide and inconsistent. Given that these films are noticeably thinner than typical still films, I’m unsure whether the problem lies with the film itself or with my camera.



I’m using a Zorki 2C, which loads from the bottom like an old Leica, with the film attached to a take-up spool. This camera has shown no spacing problems when shooting standard-thickness films such as Kentmere 400 or Foma 100, so I’m struggling to identify what might be causing the irregular spacing.

Has anyone experienced similar issues with Svema NK-2SH or A-2SH, or with thin-base films in general?

Since I really enjoy the look of A-2SH, I’d love to figure this out so I can keep using it with confidence.

Thanks in advance for any insights!

Those are consistently off by about one sprocket hole per frame. I wonder if the slightly different shape of the cine sprocket holes could be leading to one skip per frame (potentially due to a rounded-off tooth on the frame counter drive wheel)?