Industar 22 Russian Lens
Product description

Industar 22 Russian lens history Produced for the first rangefinder camera such as "Sharp" and the suffix "Y" ("Y", "U-1") - for the enlarger. Was the standard lens and mirror for the first Zenith. Had a...

 
 

Industar 22 lens history

Industar 22 produced for the first rangefinder camera such as "Sharp" and the suffix "Y" ("Y", "U-1") - for the enlarger. Was the standard lens and mirror for the first Zenith. Had a different design options, including a folding option, similar to the lens Leitz Elmar (3,5 / 5 cm). In the late 1950's was replaced by the recalculation, higher quality lens of the same scheme - Industar-50. Focal length of 52 mm (51.39 mm), aperture 1:3,5, field of view 46 °. Number of elements / groups 4 / 3, the limits of the scale diaphragms 1:3,5 - 1:16, Closest Focus: rangefinder option - 1,25 m (1 m) for SLR cameras - 1 m (0,65 m). Resolution of N (center / edge): rangefinder folding option - 32/22 lines / mm (according to other sources [101, p. 171] - center / edge - 30/19), light transmission 0.80. Production batch.