Technical data
Focal length, mm. 133.20+1%
Relative aperture 1:2.8
Field of view angle, degrees. 18
Aperture limits From 1:2.8 to 1:22
Working distance, mm:
with adapter M42X1 45.5±0.02
with adapter M39X1 45.2+0.02
Anterior focal segment, mm. —161.05
Posterior focal length, mm. 78.86
Light transmission coefficient Not less than 0.80
Resolving power, lp/mm:
in the center of the field 44
along the edge of the field 24
Focusing limits, m. From 1.2 to 00
Light diameter of surfaces, mm:
first 47.6
last 26.6
Connecting thread M42X1
Landing dimensions for nozzles:
threaded M55X0.75
smooth, mm. 60
Dimensions, mm:
largest frame diameter 70
lens length 110
Weight, kg. 0.60
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