Helios 44M-4 Russian M42 lens

Helios 44M-4 Russian M42 lens
  • Helios 44M-4 Russian M42 lens
  • Helios 44M-4 Russian M42 lens
Product description

Helios 44M 4 lens history Regular small-format lens for SLR cameras. The fast six lens anastigmat. Enlightened optics or multi-layer coating. It features the exact match of visual and photographic i...

 

 

Helios 44M 4 lens history

 

Regular small-format lens for SLR cameras. The fast six lens anastigmat. Enlightened optics or multi-layer coating. It features the exact match of visual and photographic image planes.

 
 

Helios 44M 4 lens description

 

  • Angle of view - 40 ° 28 ',
  • Focal Length - 58 mm (58.60 mm), 
  • Relative aperture - 1:2. 
  • Frame size - 24x36 mm,
  • Number of lenses / groups - 6 / 4
  • Front vertex focal distance - -34.25 mm
  • Rear vertex focal length - 38.05 mm . 
  • Distance from first to last the surface - 39.80 mm . 
  • Light diameter of the first surface - Ø29, 5 mm;