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Pictures
Optical design
| Format: 35mm SLR
Type: Prime lens
Focusing: Manual Focus (MF)
Lens mounts: M42
Optical design: 6 elements in 4 groups
| | Specifications:
Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr/oz) | Length (mm/in) |
---|
58mm | f/2.0 | f/16 | 6 | 0.5 | 52 | 300/10,6 | 42/1,7 |
| Additional information:
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:
Helios-44M-4: 0.80
MC Helios-44M-4: 0.85
Color formula:
Helios-44M-4: 10-0-1.5
MC Helios-44M-4: 11-0-0
Geometrical vignetting: 58%
Posted by: dobrun Date of publication: 20.03.2011
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Photos taken with this lens Helios-44M-4 58 mm f/ 2: