KMZ Helios 44 silver 2/58mm, 8 blades M39/M42 for SLR 


m39 Zenit Thread Mount
49mm filter thread
8 diaphragm blades
F/2-16 max-min aperture
50cm minimum focusing distance
6 lenses in 4 groups
220g of weight
38/20 line per mm optical resolution
(center/edges)
System: M39 / M42 

Helios-44 series of lenses comparing to kit zoom lenses

Helios-44 is a vintage soviet line of fast fixed focal length(prime) lenses, in high demand nowadays for their fast aperture(f/2), which opens up a world of possibilities for photographer – selective focusing, low light photography, great portraits with vintage feel and beautiful bokeh courtesy of Carl Zeiss Biotar formula in use; for their ability to be mounted on various camera systems via affordable and easily available adapters.


CONDITION

The Lens is in Good Condition. fully operational. The glasses are clean without a fungus and without chips and without deep scratches.. There are minor traces of cleaning that will not affect the photo quality. Aperture and focus are working properly. 
Comes with the lens supplied. adapter m42 + front cover