The Zorki cameras and also the FED range have a screw mount for the lenses similar to the one used by Leica, though they may not couple with the rangefinder on a Leica. The Kiev range are based on the original Zeiss Ikon Contax rangefinder cameras of the 1930's and have inner and outer bayonet mounts similar to the Contax. I'm not sure whether the Kiev lenses will couple with the Contax rangefinder. However, as others have said, the manufacturing quality was often poor. I bought a new Kiev in the late 1970's which had to go back under guarantee because of over-lapping frames. The camera felt very old fashioned and "agricultural" so I rarely used it.