|
| Weight: |
770 g
|
| Brand: |
National Geographic
|
| Description: |
Type: binoculars, magnification: 7 x, objective lens diameter: 50 mm, exit pupil diameter: 7.14 mm, functions: pupillary distance adjustment, construction: retractable eyecups, tripod mount, rubberized housing
|
| Width: |
195
|
| Height: |
62
|
| Type: |
Binoculars
|
| Length: |
178 mm
|
| Lens diameter: |
50 mm
|
| Exit pupil diameter: |
7.14 mm
|
| Minimum focusing distance: |
8 m
|
| Field of view at a distance of 1000 m: |
122 m
|
| Increase: |
7 x
|
| Angular field of view real: |
7°
|
| Diopter adjustment: |
±5D
|
| Prism material: |
BK-7
|
| Interpupillary distance max.: |
7.3 mm
|
| Interpupillary distance min.: |
56 mm
|
| Relative brightness: |
50.98
|
| The Twilight Factor: |
18.71
|
| Prism type: |
Porro
|
| Focusing: |
Central
|