| Magnification |
8x |
10x |
12x |
| Obj. lens diameter |
42mm |
42mm |
42mm |
| Exit pupil |
5.3mm |
4.2mm |
3.5mm |
| Field of View (FOV)
|
6.5°
|
6° |
5° |
| Apparent FOV (FOV x Power) |
52° |
60°
|
60° |
| Field of view (ft/1000 yds) |
341 |
314 |
262 |
| Brightness |
27.6 |
17.6 |
12.3 |
| Light transmission (%) |
90.00% |
89.00% |
89.00% |
| Twilight factor |
18.3 |
20.5 |
22.4 |
| Multi Position Eyecups Y/N |
Yes |
Yes |
Yes |
| Eye relief |
19.5mm |
16mm |
15mm |
| Near focus |
5.9ft |
5.9ft |
5.9ft |
| Eye width adjustment |
58~72mm |
58~72mm |
58~72mm |
| Dimension WxHxD |
5x5.7x2.1 |
5x5.7x2.1 |
5x5.7x2.1 |
| Weight |
24 oz |
24.5 oz |
24.5 oz |
| Lens constr. obj. |
3 groups 4 elements (ED) |
3 groups 4 elements (ED) |
3 groups 4 elements (ED) |
| Lens constr. ocular |
3 groups 4 elements |
3 groups 4 elements |
3 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) |
+/-3 |
+/-3 |
+/-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 and Chinese components assembled in the Philippines |
Japanese and Chinese components assembled in the Philippines |
Japanese and Chinese components assembled in the Philippines |
