Quote Originally Posted by Robert Kennedy
Don't ya love Soviet Era quality control....
What does a german design (Biogon 2,8/35) and soviet QC (which actually did exist at LZOS) to do with a japanese camera maker taking off-the-shelves modules like a basic SLR housing less the mirror box plus a standard shutter adding up to a camera... and that particular shutter is just a bit to close to the lens flange since it never has been designed to be used on a RF camera.

I have never heard of a J12 rear element actually hitting the shutter of a "Bessa" - it just protudes deep enough to block the light from reflecting towards the meter cell.