BRESSER Topas 7-21x40
Binoculars, magnification: 21 x, lens diameter: 40 mm, output pupil diameter: 5.71 mm, weight: 710 g
Binoculars, magnification: 21 x, lens diameter: 40 mm, output pupil diameter: 5.71 mm, weight: 710 g
Main Characteristics |
|
Types |
Binoculars |
Theater binoculars |
|
Astronomical binoculars |
|
Built-in compass |
|
Built-in range finder |
|
Optical stabilizer |
|
Digital Cameras |
|
Technical Specifications |
|
Zoom |
|
Increases |
21x |
Lens diameter |
40 mm |
Diameter of the output pupil |
5.71 mm |
Field of view at a distance of 1000m |
73 m |
Focusing |
centralised |
Minimum Focusing Distances |
8.0 km |
Type of prism |
Porro |
Materials of prism |
BK-7 |
Relative brightness |
32.6 |
The Twilight Factor |
28.98 |
Adjusting the distance between pupils |
|
Aspheric lenses |
|
Low-dispersion lenses |
|
Multilayer coating of lenses |
|
Corpus |
|
Retractable eyelids |
|
Rubber eyelids |
|
Protection from moisture and dust |
|
Nitrogen/argon filling |
|
Shockproof housing |
|
Rubberized hull |
|
Mounting on a tripod |
|
Without eyeball |
|
Flap/case in set |
|
Colors |
black, grey |
Dimensions and weight |
|
Width |
185 mm |
Heights |
55 mm |
Length |
160 mm |
Weight (disambiguation) |
710 g |