Magnification 8x 10x
Obj. lens diameter 42mm
42mm
Exit pupil 5.25mm 4.2mm
FOV
7.4°
6.5°
Apparent FOV (FOV x Power)
59.2°
65°
Field of view (ft/1000 yds) 388 341
Brightness 27.6
17.6
Light transmission (%) 91.90% 90.90%
Twilight factor 18.3
20.5
Multi Position Eyecups Y/N Yes
Yes
Eye relief 18.6mm 16mm
Near focus 6.6ft 6.6ft
Eye width adjustment 56~73mm
56~73mm
Dimension WxHxD 5x6.2x2.1
5x6.2x2.2
Weight 29.125 oz 29.75 oz
Lens constr. obj. 3 groups 4 elements (ED)
3 groups 4 elements (ED)
Lens constr. ocular 4 groups 5 elements 4 groups 6 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) +/-3
+/-3
Pressure tested to what pressure 1m for 30 min. (IPX7)
1m for 30 min. (IPX7)
Storage temperature
-40°~158°F
-40°~158°F
Functional temperature
-13°~140°F
-13°~140°F
Frame material Magnesium
Magnesium
Internal gas purged Nitrogen
Nitrogen
Tripod Adaptable Y/N Yes Yes
Origin Japanese components assembled in the US
Japanese components assembled in the US