lxmike
M2 fan.
-22 is the coldest I've shot stuff in, (pentax lx) and the camera and film survived, phew
I am regularly rocking my Kiev 4 at -20 celsius in the winter, along with my Nikon DSLR gear if I'm out shooting landscapes. If a mid-range Nikon DSLR can handle this kinda temperature, then considering Russian winters, I'm sure Kiev can shoot below at least -40 celsius although at that temperature, the problem is, I can't shoot 😉
With that said, I have not used a Zorki and have no idea about its internals, so take this with a grain of salt.
And I should also mention that Kiev is an all metal camera which, as well, has metal shutter curtains. I know some of those FED's, Zorki's and older Pre-M Leicas have cloth shutter curtains if I'm not mistaken.
I wonder if FSU cameras were originally lubricated with fish-based oils, that don't have the gelling problems of petroleum-based lubricants. Then, years later, they get CLA'd and end up with cold temperature problems.
~Joe
I wonder why many assume FSU cameras were built to be operated in deep cold Siberia between bears and moose? It's a cliche of Hollywood from 80's. When USSR were alive, absolutely biggest part of population lived outside of mentioned climate zone. No one camera maker would specially make cameras deep cold ready if there would not be high demand for them.