Helios 44M-6 f2 58mm M42 for Zenit, Canon, Nikon, Russian vintage lens EXC

Helios 44M-6 58mm f/2 MC is a fast, normal lens with a fixed focal length for 35-mm SLR cameras with an M42 thread.
Enlightened optics or multilayer enlightenment.
It features an exact match of the visual and photographic image planes.
Based on the Biotar 2/58 lens (Carl Zeiss Jena).
The lens Helios 44M-6 58mm f / 2 MC was produced at the Valday plant "Jupiter".

Through the adapter is installed on modern digital SLR and without SLR cameras.

Specifications:
Format: 35mm mirror
Type: Constant focal length (fixed)
Focus: Manual Focus
System: M42
Optical design: 6 elements in 4 groups
Focal length: 58mm
Aperture: f / 2.0 - f / 16
Petal diaphragm: 6
Diameter of filter thread: 52mm
Weight: 270g
Length: 42mm
Year of production: 1991
Plant: Jupiter