Magnification 15x 18x
Obj. lens diameter 56mm
56mm
Exit pupil 3.73mm 3.11mm
Field of View (FOV)
4.1°
3.7°
Apparent FOV (FOV x Power)
56.5°
66°
Field of view (ft/1000 yds) 215 194
Brightness 17 9.7
Light transmission (%) 92.07% 93.00%
Twilight factor 29 31.75
Multi Position Eyecups Y/N Yes
Yes
Eye relief 17.4mm 16.4mm
Near focus 16.4ft
16.4ft
Eye width adjustment 60~75mm
60~75mm
Dimension WxHxD 5.78x7.75x2.6
5.78x7.75x2.6
Weight 45.1 oz 44.8 oz
Lens constr. obj. 7 groups 5 elements (ED)
6 groups 4 elements (ED)
Lens constr. ocular 4 groups 3 elements 4 groups 3 elements
Prisms type Schmidt-Pechan
Schmidt-Pechan
Prism reflective coating type Dielectric Coating
Dielectric Coating
ED glass Yes Yes
Lens coating Scratch and Oil Resistant
Scratch and Oil Resistant
Diopter correction (dpt) +/-5
+/-6
Pressure tested to what pressure 1m for 5 min. (IPX6)
1m for 5 min. (IPX6)
Storage temperature
-10°~140°F
-10°~140°F
Functional temperature
20°~122°F
20°~122°F
Frame material Polymer
Polymer
Internal gas purged Nitrogen
Nitrogen
Tripod Adaptable Y/N Yes Yes
Origin China
China