Zenit-E is a 35mm film SLR with Helios 44-2 lens, made in 1971. Zenit (Russian: 3EHNT) is a Russian (formerly Soviet) camera brand manufactured by KMZ in the town of Krasnogorsk near Moscow since 1952 and by BelOMO in Belarus since the 1970s. The Zenit E does not have aperture automation, and therefore must be used with manual diaphragm / preset lenses or auto diaphragm lenses with an auto/manual switch.
Lens: Helios-44-2 58mm f/2, M42 screw mount, filter thread: 41mm. This is the standard lens, the other standard lens was Industar-50-2 3.5/50. Focus range: 0.5-20m +inf.