Lens was tested! You can see quality photo by lens on last photos! Photos made on samsung nx1100 camera with nx to m39 adapter.

The aperture of the Helios 89 lens is more than similar lenses Jupiter 8 (2.0 / 50) Jupiter 12 (2.8 / 35) Industar 69 (2.8 / 28) Mir 1b (2.8 / 37)

My lens was modernized for flange focal distance 28.8mm and tested on my
mirrorless camera to infinity point focus!
That is, you can use my lens on any mirrorless camera with standart LTM m39 adapter to your any mirrorless camera and you can focus to infinity!!!
Also my lens modernized for minimum focusing distance from 0.1m! That is, you can use this lens also as macro lens!

Helios-89 m39 f/1.9 30mm is fast, wide angle lens with a fixed focal length for 24x18 frame size camera, so on camera with crop-matrix you have really focal length 30 mm!

Lens can not be used on cameras with internal rangefinder as leica, zorki etc!!!

Features:

Frame size - 24x18 mm
The focal length -28 mm
Maximum aperture - 1.9 FIXED
Minimum aperture - 1.9 FIXED
Number of lenses / groups - 6/4.
Minimum focusing distance (MDF) - 0.1 m
Angle of view - 56 °.
Type of mounting screw - M39 LTM.
Type of enlightenment - a single layer.
Weight - 70 gramm

See please my other item. Maybe will be something interested. Thank you!