MC Helios-81H 81N (Arsat H) 2/50 50mm f2 lens, Nikon, Kiev.
Helios 81H is a high quality Soviet lens known for its sharp images and beautiful bokeh. This lens is a great choice for collectors and photographers.
Features
Focal length: 50 mm
Aperture limits: f/ 2—16
Weight: 300 g
Length: 48 mm
Filter thread: 49 mm (depending on version)
Number of aperture blades: 6