| 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
|
| Phase Correction Coating |
Yes |
Yes |
| 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
|
