Helios 44 M42 Lenses

The Helios lenses were produced in 2 main types. M and K mounts.
The original, first “Helios 44″ was made for earlier M39 mount cameras.

These lenses are clones of the Carl Zeiss 58mm f/2 Biotar.
The Biotar employs a classic 6 elements in 4 groups lens configuration.

GENERAL SPECIFICATIONS
Focal Length	Minimum Focus	Maximum Aperture	Minimum Aperture	Lens Construction
58 mm	0,5 m	f/2	f/16	6 elements, 4 groups

DIFFERENCES
Lens Type	Coating	Aperture Control	Iris Blades	Filter Diagraph
Helios 44-2	Single Coated	Manual	8	49 mm
Helios 44-3	Multi Coated	Manual	8	52 mm

Helios 44M	Single Coated	Auto/Manual (Switch)	8	52 mm
Helios 44M-4	Single & Multi Coated Versions	Auto	6	52 mm
Helios 44M-5	Multi Coated	Auto	6	52 mm
Helios 44M-6	Multi Coated	Auto	6	52 mm
Helios 44M-7	Multi Coated	Auto	6	52 mm

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