| Magnification |
6x |
8x |
10x |
| Obj. lens diameter |
30mm |
30mm
|
30mm
|
| Exit pupil |
5mm |
3.8mm |
3mm |
|
Field of View (FOV)
|
8.5°
|
8.2°
|
6.5°
|
| Apparent FOV (FOV x Power) |
51°
|
65.5°
|
65°
|
| Field of view (ft/1000 yds) |
446 |
430 |
341 |
| Brightness |
25 |
14.1 |
9 |
| Light transmission (%) |
94.60% |
95.20% |
94.60% |
| Twilight factor |
13.4 |
15.5 |
17.3 |
| Multi Position Eyecups Y/N |
Yes |
Yes
|
Yes
|
| Eye relief |
18.3mm |
15.1mm |
15.3mm |
| Near focus |
8.2ft |
8.2ft |
8.2ft |
| Eye width adjustment |
56~73mm |
56~73mm
|
56~73mm
|
| Dimension WxHxD |
4.7x4.6x1.6 |
4.7x4.6x1.6
|
4.7x4.6x1.6
|
| Weight |
16.1 oz |
16.6 oz |
16.8 oz |
| Lens constr. obj. |
3 groups 4 elements (ED) |
3 groups 4 elements (ED)
|
3 groups 4 elements (ED)
|
| Lens constr. ocular |
4 groups 5 elements |
4 groups 5 elements |
4 groups 5 elements |
| Prisms type |
Schmidt-Pechan |
Schmidt-Pechan
|
Schmidt-Pechan
|
| Prism reflective coating type |
Dielectric coating |
Dielectric coating
|
Dielectric coating
|
| Phase Correction Coating |
Yes |
Yes |
Yes |
| ED glass |
Yes |
Yes |
Yes |
| Lens coating |
Scratch and Oil Resistant |
Scratch and Oil Resistant
|
Scratch and Oil Resistant
|
| Diopter correction (dpt) |
+/-2 |
+/-4
|
+/-4
|
| Pressure tested to what pressure |
1m for 30 min. (IPX7) |
1m for 30 min. (IPX7)
|
1m for 30 min. (IPX7)
|
| Storage temperature |
-40°~158°F
|
-40°~158°F
|
-40°~158°F
|
| Functional temperature |
-13°~140°F
|
-13°~140°F
|
-13°~140°F
|
| Frame material |
Polymer |
Polymer
|
Polymer
|
| Internal gas purged |
Nitrogen |
Nitrogen
|
Nitrogen
|
| Tripod Adaptable Y/N |
Yes |
Yes |
Yes |
| Origin |
Japanese components assembled in the US |
Japanese components assembled in the US
|
Japanese components assembled in the US
|
