M40x0.75 adapters
Adapters with M40x0.75 thread.
Such a thread is used to mount a front lens cell to size #1 shutters (Compur #1, Copal #1, Copal Press #1, Prontor #1).
Adapters with M40x0.75 thread.
Such a thread is used to mount a front lens cell to size #1 shutters (Compur #1, Copal #1, Copal Press #1, Prontor #1).