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Technical data ATC / STC

STC 17-40x56

Color
green
Objective
17-40xMagnification
56 mmEffective objective lens diameter
3.4-1.4 mmExit pupil diameter
20 mmEye relief
186-102 ft/1000 ydsField of view at m/1,000 m / ft/1,000 yds
3.52-1.93 °Field of view degrees
57-71 °Field of view apparent
11.2 ftShortest focusing distance
> 5 dptDiopter correction at ∞
88 %Light transmission
Digital
M 58x0.75Objective filter thread
Environment & Conditions
-13 to 131 °FFunctional temperature
-22 to +158 °FStorage temperature
13 ft (4m) water depth (inert gas filling)Submersion tightness
Size & weight
34.6 ozWeight
11.2 inLength in mm.