This family portrait represents the first time I pulled out my DSLR in probably close to a year. Feels so very unfamiliar now & didn't quite turn out, but I wanted to be able to see how the flash was affecting things.
Perhaps unsurprisingly, what constituted a lens that met specifications appears to have a wider margin of error for the Soviet factories than the German ones. My Zeiss Jena & Zeiss-Opton 50mm lenses mount smoothly in both the Contax II & IIa, as well as the Kiev. My Soviet-made 50s, however, don't quite fit into either of the two Contaxes. (The Jupiter-8M mounts, but won't turn to lock. The Helios-103 won't even mount.)
It appears to mainly be in relation to the inner bayonet. My Jupiter-12, which uses the outer bayonet, mounts fine on both the II & the Kiev. (It doesn't mount on the IIa, but that's due to changes in the shutter design that makes it infeasible with its protruding rear element.)
Strangely, the specially-designed Contax film cannisters produce a different result: a post-war aluminium cannister fits in all three cameras, but the Kiev's back won't lock in place if a pre-war brass cannister is used.
Last edited by g026r; 10-20-2017 at 05:43 PM.