Helios-65 52 mm f/ 2 Lens
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|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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|Focal length||Max. aperture||Min. aperture||Blades||Min. Focus (m.)||Filter Ø (mm.)||Weight (gr/oz)||Length (mm/in)|
|52mm||f/2.0||f/22||6||0.5||49|| || |
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