hi,
some time ago I acquired an 180mm Fujinon, the single coated version with inscriptions on the front side of the lens.
It came in an electronically controlled copal shutter which I sold. The lens cells I put in a Compur 1 shutter, the last model from Compur. I used this lens for some pictures on a 5x7 and later a 4x5 camera. With the 4x5 I noticed, that images weren't as sharp as with my 125mm Fujinon. I also noticed, that the front cell just barely screwed into the shutter (maybe a quarter turn).
It seems like there is something stopping it from going in all the way into the shutter. Or the threading of the shutter is recessed to deeply.
Has anyone experienced this before? I always thought, that Copals and Compurs are built to the same dimensions.
Greetings,
pjotr
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