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|Format: 35mm SLR|
Type: Prime lens
Focusing: Manual Focus (MF)
Lens mounts: M42
Optical design: 6 elements in 4 groups
|Focal length||Max. aperture||Min. aperture||Blades||Min. Focus (m.)||Filter Ø (mm.)||Weight (gr/oz)||Length (mm/in)|
The Helios-44M-4 58 mm f/ 2 (Russian: "Гелиос") is a fast standard lens with a fixed focal length for 35mm cameras with M42 screw mount.
Was being manufactured at Krasnogorskiy Mehanicheskiy Zavod (factory) and at "Jupiter" factory in Valday. There are modifications with multicoating (labeled "MC") and a chemical single coating.
Resulution by a technical passport (center/edge):
Helios-44M-4: 38/19 lp/mm
MC Helios-44M-4: 41/20 lp/mm
Light transition ratio:
MC Helios-44M-4: 0.85
MC Helios-44M-4: 11-0-0
Geometrical vignetting: 58%
Posted by: dobrun Date of publication: 20.03.2011
Photos taken with this lens Helios-44M-4 58 mm f/ 2: