I recently picked up a Copal self cocking shutter, my intention was to mount my Apo Rodagon for some close up work. I was led to believe this shutter had a standard 39mm thread, but on attempt to mount the lens, it seems to have a 40mm thread.
Has anyone used this shutter and have any experience mounting a lens in it?
I would imagine someone like Grimes could make a ring to adapt it if all else fails.
Thank you in a advance for any help or suggestions.
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