| Magnification |
8x |
10x |
| Obj. lens diameter |
42mm |
42mm
|
| Exit pupil |
5.25mm |
4.2mm |
| Field of View (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 |
5x6.2x2.1
|
| 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
|
