Vintage lens, Helios lens, Russian Lens, Zenit lens, Helios 44 NOS, manual lens, deals Carl Zeiss Biotar, SLR lens, vintage camera lens, USSR lens

Vintage lens, Helios lens, Russian Lens, Zenit lens, Helios 44 NOS, manual lens, Carl Zeiss Biotar, SLR lens, vintage camera lens, USSR lens

The russian Hellios 44 is a copy of the Carl Zeiss Biotar 58mm. Helios-44 is a series of standard lenses for SLR cameras, produced in Soviet Union by KMZ, MMZ, Jupiter from 1958 till 1992 (2001?) and it is considered to be one of most mass produced lenses deals in the world. Based on the lens Biotar 2 / 58 , at the beginning was called "БТК" - "БиоТар Красногорский" (BioTar Krasnogorski). A fast 6-element anastigmat, it was available in both single-coated and multi-coated versions. The lens has, what is referred to as optical vignetting, meaning that out of focus “bokeh-balls” becomes more elipsoid as you move away from the center of the image. Also referred to, as “Cat-eye” effect, this phenomenon gives a pronounced feeling that the background “swirls” around the center focus subject. What really surprised me though, was all the other scenarios this lens was good for! The 58mm focuslength on a APS-C sensor turns into a 87mm FOV equivalent which makes it a really nice medium tele lens.

Focal Distance: 58mm (may vary in real)
Optical Formula: 6 elements in 4 groups.
Aperture Range: f/2 - f/16. (f/22 later)
Angle of View: 40°28
Geometric Vignetting: 58%
Minimum Focusing Distance : 0.5 m
Number of Aperture Blades : Helios-44-N -8
Filter Diameter: M49x0.75
Lens Mount: m42 thread
Optical Resolution (center/edge) : 38/20 lines/mm
Transmittance : 0.82
Color Formula : 10-0-1.5
Weight : 0.23 kg