The Russians, or more correctly for the era in question, the Soviet Union, produced
a range of Leica copies in the late 1960s and 1970s, with some spinoffs also coming
from China. Fed and Zorki are two of the Leica 'knockoffs'. This Zorki 4K from the
KMZ factory at Krasnogorsk outside of Moscow, is one such camera. It is complete
with Leica style rangefinder, Leica threaded interchangeable lens, and it must be said,
solid (with a capital S) build. Not every Zorki performs like a Leica, however, as it
seems that quality control at that time was lacking. Although the Zorki 4K was the
last and arguably the best of the Zorkis (although there were 5s and 6s), the earlier
models such as Zorki 1 etc. were much more the mirror image of Leica design. Finally,
it is agreed generally that the lenses were not to the standard of Leitz/Leica, including the
allegedly 'soft' Industar-50 (3.5/50) fitted here. The Jupiter-8 (2.0/50) was a better option.
Actually, in use, I find this old Industar-50 works just fine. I must have got a 'Monday' copy.