Maven B.5 12x56 specs and field of view
Relative brightness works out to 21.8 on the Maven B.5 model in 12x56, and its exit pupil works out to 4.7 mm.
- Field of view
- 289 ftat 1,000 yd
- Eye relief
- 17.4 mm
- Close focus
- 9.8 ft
- Weight
- 45 oz
- Exit pupil
- 4.7 mmcalculated
Why pick it
- Longest eye relief of the 2: 17.4 mm
- Waterproof
- ED glass
Who the B.5 12x56 suits
Suits hunting use, the use the maker names. The 289 ft field and 17.4 mm eye relief suit steady looks from a rest.
The body weighs 45 oz and close focus is 9.8 ft, so it is heavy and ill-suited to near subjects.
B.5 12x56 can be set against the most popular models of every size in the best binoculars list. Maven lists it in the $1,000 to $2,000 price band, alongside the models in best binoculars over $1,000.
B.5 12x56 specifications
B.5 12x56 figures as Maven prints them; rows marked * are calculated from the 12x56 size.
| Magnification | 12x |
|---|---|
| Objective lens | 56 mm |
| Prism type | Roof |
| Field of view | 289 ft at 1,000 yd (96 m at 1,000 m) |
| Angular field of view | 5.5° |
| Apparent field of view | 66° |
| Eye relief | 17.4 mm |
| Close focus | 9.8 ft (3 m) |
| Eye spacing range | 56 to 75 mm |
| Weight | 45 oz (1,276 g) |
| Length | 8.2 in (208 mm) |
| Width | 6.1 in (155 mm) |
| Extra-low dispersion glass | Yes |
| Waterproofing | 1m for 30 min. (IPX7) |
| Fog-proofing gas | Nitrogen |
| Tripod adaptable | Yes |
| Maker list price | $1,000 to $2,000 |
| Exit pupil | 4.7 mm * |
| Twilight factor | 25.9 * |
| Relative brightness | 21.8 * |
* Calculated from the size, not printed by the maker.
B.5 12x56 and its nearest rivals
B.5 12x56 next to the 12x56 models closest to it in maker list price, with the best figure in each column in bold.
| Model | Field of view | Eye relief | Close focus | Weight | Exit pupil | Maker list price | Amazon |
|---|---|---|---|---|---|---|---|
| Maven B.5 12x56 | 289 ft | 17.4 mm | 9.8 ft | 45 oz | 4.7 mm | $1,000 to $2,000 | |
| Celestron Nature DX 12x56 | 289 ft | 16 mm | 9.8 ft | 36.2 oz | 4.7 mm | $200 to $500 | Check price on Amazon |
Binocular Chart earns a commission from qualifying Amazon purchases made through these buttons.
Other sizes of the B.5
Maven makes the B.5 in 4 sizes; a larger front lens adds brightness and weight, and more magnification narrows the view.
| Model | Size | Field of view | Eye relief | Close focus | Weight | Exit pupil |
|---|---|---|---|---|---|---|
| Maven B.5 12x56 | 12x56 | 289 ft | 17.4 mm | 9.8 ft | 45 oz | 4.7 mm |
| Maven B.5 10x56 | 10x56 | 341 ft | 19 mm | 9.8 ft | 45 oz | 5.6 mm |
| Maven B.5 15x56 | 15x56 | 236 ft | 17.8 mm | 9.8 ft | 45 oz | 3.7 mm |
| Maven B.5 18x56 | 18x56 | 194 ft | 18 mm | 9.8 ft | 45 oz | 3.1 mm |
Maven binoculars
B.5 12x56 questions
B.5 12x56: does it work with glasses?
B.5 12x56 has 17.4 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
B.5 12x56: what does 12x56 mean?
B.5 12x56 magnifies 12 times through 56 mm front lenses, which works out to an exit pupil of 4.7 mm, the width of the beam of light that reaches each eye.
B.5 12x56: can it go on a tripod?
B.5 12x56 is tripod adaptable according to Maven, so it accepts a binocular tripod adapter.