Magnification | 6x | 8x | 10x |
Obj. lens diameter | 30mm |
|
|
Exit pupil | 5mm | 3.75mm | 3mm |
|
|
|
|
Apparent FOV (FOV x Power) |
|
|
|
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 | 16.25 oz | 16.25 oz | 16.5 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
|
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) |
|
|
Storage temperature |
|
|
|
Functional temperature |
|
|
|
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
|