ZENIT Photo Lens | HELIOS-44M-6 | 58mm 1:2 retailer | M52x0,75

High-aperture standard lens for Zenith cameras with m42 threaded mount.
Representative of the penultimate version of Helios-44, Planar optical design.
All Helios-44s are based on retailer the legendary Carl Zeiss Jena Biotar 58/2.
It was produced from 89 to 93 years (approximately) and is found more often than other MS versions.
Brand NEW condition.
Original box.

Specifications:

Focal length - 58 mm.
The maximum aperture is 2.0.
The minimum aperture is 16.
The number of aperture blades is 6.
Number of lenses/groups - 6/4.
The minimum focusing distance is 0.5 m.
Center/edge resolution - 45/25 lines per mm.
Light transmission - 0.90.
Working length - 45.5 mm.
Attachment of nozzles - threaded m52.
Mounting optics - M42.