Back around 1969/70 I had my first magazine cover, the camera was a Zenit E with an f2 Helios, it was a surprisingly good lens, the camera wore out after about 3 years heavy use

In fact looking back the lens was always good even at wide apertures. I have a russian FED bought from an APUG US member and the lens on that is excellent too. Even "Che" used Russian cameras and he was very accomplished photographer, perhaps not in the CIA's eyes

Ian