|Posted: Fri Jul 21, 2017 7:32 pm Post subject: Carl Zeiss Jena Sonnar 180 /2,8 - Diaphragm setting
I've just found, after some research, a CZ-Jena Sonnar 180/2,8 of a relatively early DDR production (s/n 4226437).
I see that the diaphragm setting ring has two chrome finished "buttons" and a round "window", through which I see the diaphragm value "22" so, I can freely rotate the setting ring from 2,8 up to the closest value, 22.
My question is whether there is a way to pre-set an intermediate value and see it through that round window, so that I can be sure to close at a pre-set value.
Many thanks in advance,