Rare super wide angle lens made by LOMO for 35mm cine film cameras. I didn't saw it in real life.

Specification of LOMO OKS1-9.5-1 optical block 

Manufacturer
NPO "EKRAN"
Lens system

-
Focal length
f' 9.55 mm
Angle of view 2ω' 175°
Effective relative aperture f:ne 1:5.7
Lens length
Σd 111.1 mm
Front focal length S -
Back focal length S' 27.9 mm
Flange focal distance Z
-
Block length
B 110 mm
Block max. diameter
D 124 mm
Rear diameter
D' 30 mm
Front element diameter
d1 104 mm
Rear element diameter
d2
23 mm
Mount thread

-
Distance from rear end of the housing
to the focal plane
l
27 mm
Aperture blades quantity

?
Frame size

16x22 mm
Weight
1.1 kg
 

 

 

 

 

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