View Full Version : Copal thread size

luis a de santos
10-Apr-2008, 12:58
Could someone tell me the size/diameter of the copal shutter thread ?
This is for Copal size 0, size 1 and size 3.
I want to put a filter in there when I remove the front element of the lens.



Peter K
10-Apr-2008, 13:05
Copal 0 front- and back-thread M 29,5mm; Copal 1 front M 40 x 0.75mm, back M36x0,75mm; Copal 3 front- and back-thread M 56 x 0,75mm.