Odd CL Light Leak

[wlewisiii]

Hello all,

Over the past couple of rolls, I've gotten an odd and only occasional light leak. The shot attached is similar to all of them. It's only happened on one shot per roll except for once when it happened twice. They are from different light levels and different types of film, which I believe rules out processing errors. The only other constant is that all were shot with the collapsible Summicron mounted, but I can't imagine this look coming from the optics.

Any ideas?

William

 

[Palaeoboy]

Does the line continue up into the spocket hole area or is it limited to just the regular image frame?