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Helios-65 52 mm f/ 2 Lens

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Helios-65 52 mm f/ 2 lens

Helios-65 52 mm f/ 2 lens

Helios-65 52 mm f/ 2 lens

MTF-charts

Helios-65 52 mm f/ 2 MTF Chart

Optical design

Helios-65 52 mm f/ 2 optical design

Format: 35mm rangefinder

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: M39, Pentax K, M39 Leica screw-mount (LSM)

First year of production: 1957

Optical design: 6 elements in 4 groups

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Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
52mmf/2.0f/2260.549

Additional information:

The Helios-65 52 mm f/ 2 (Russian: "Гелиос") is a fast standard lens for the 35мм rangefinder and SLR cameras.

  It has a single-layer chemical coating.

 There were several versions of a Helios-65 for the different systems:

  •   for the rangefinder cameras with a thread mount M39x1/28.8
  •   for the SLR cameras with a thread mount M39x1/45.2
  •   low-end version for ZEINT-4 cameras (Helios-65Ц)
  •   bayonet mount for the SLR camera Kiev-10 (Helios-65-avtomat), made by "Arsenal" factory in Kiev.


Resolution (center/edge): 35/15 lp/mm
Aperture coeff. (light transition ratio): 0.81


Posted by: dobrun   Date of publication: 07.07.2011


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