I'm wondering what is causing these weird lines at the very edges of my frames when shooting Efke IR 820 Aura through my Hassy 500 CW? I notice these on every frame on all 4 edges. The sample frame I am showing here mostly shows it on the left and right because the top and bottom are too dark to really show it, but they are there in every frame.
Does anyone know what is causing these? My 500 is in 110% mint condition and has no brassing or paint wear on the film back that could be causing reflections, but that isn't to say that the paint itself does not reflect IR.