Originally Posted by resummerfield
I have a Helios 40-2 and, like every Helios model 40 lenses, it is a Pre-Set lens with no meter coupling. Stop down metering is required.
Pentax 645, Pentax ME Super
Minolta SRT 102, SRT 202
many Nikons-F2 eye level F2AS N90s, F4E, N2000, N6000, N6006, Nikomat FTN, N5005