Maven B.5 18x56 specs and field of view
The Maven B.5 model in 18x56 has a 194 ft field that matches the median for 18x56 models, and its twilight factor works out to 31.7.
- Field of view
- 194 ftat 1,000 yd
- Eye relief
- 18 mm
- Close focus
- 9.8 ft
- Weight
- 45 oz
- Exit pupil
- 3.1 mmcalculated
Why pick it
- 18 mm eye relief, enough for glasses
- Waterproof
- ED glass
Who the B.5 18x56 suits
Suits distant targets viewed from a tripod, the hunting use the maker names. The 18 mm eye relief equals the size median, and close focus is 9.8 ft.
Its exit pupil works out to just 3.1 mm and the body weighs 45 oz, so hand holding is tiring and dusk views are dim.
B.5 18x56 can be set against the most popular models of every size in the best binoculars list. B.5 18x56 is one of 5 models in the 18x56 binoculars comparison. Maven lists it in the $1,000 to $2,000 price band, alongside the models in best binoculars over $1,000.
B.5 18x56 specifications
B.5 18x56 figures as Maven prints them; rows marked * are calculated from the 18x56 size.
| Magnification | 18x |
|---|---|
| Objective lens | 56 mm |
| Prism type | Roof |
| Field of view | 194 ft at 1,000 yd (65 m at 1,000 m) |
| Angular field of view | 3.7° |
| Apparent field of view | 66.6° |
| Eye relief | 18 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 | 3.1 mm * |
| Twilight factor | 31.7 * |
| Relative brightness | 9.7 * |
* Calculated from the size, not printed by the maker.
B.5 18x56 against other 18x56 binoculars
B.5 18x56 shows 194 ft at 1,000 yd, at or above the 194 ft median of the 5 18x56 models in the chart. At 45 oz it is heavier than the 44.8 oz median for the size.
B.5 18x56 and its nearest rivals
B.5 18x56 next to the 18x56 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 18x56 | 194 ft | 18 mm | 9.8 ft | 45 oz | 3.1 mm | $1,000 to $2,000 | |
| Maven B.5 18x56 MOA/MIL | 194 ft | 18 mm | 9.8 ft | 45 oz | 3.1 mm | $1,000 to $2,000 | |
| Vortex Kaibab HD 18x56 | 194 ft | 16.4 mm | 19.8 ft | 43.5 oz | 3.1 mm | $1,000 to $2,000 | Check price on Amazon |
| Vortex Razor UHD 18x56 | 194 ft | 18 mm | 10 ft | 41.6 oz | 3.1 mm | over $2,000 |
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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 18x56 | 18x56 | 194 ft | 18 mm | 9.8 ft | 45 oz | 3.1 mm |
| Maven B.5 10x56 | 10x56 | 341 ft | 19 mm | 9.8 ft | 45 oz | 5.6 mm |
| Maven B.5 12x56 | 12x56 | 289 ft | 17.4 mm | 9.8 ft | 45 oz | 4.7 mm |
| Maven B.5 15x56 | 15x56 | 236 ft | 17.8 mm | 9.8 ft | 45 oz | 3.7 mm |
Maven binoculars
B.5 18x56 questions
B.5 18x56: does it work with glasses?
B.5 18x56 has 18 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
B.5 18x56: what does 18x56 mean?
B.5 18x56 magnifies 18 times through 56 mm front lenses, which works out to an exit pupil of 3.1 mm, the width of the beam of light that reaches each eye.
B.5 18x56: how wide is the view?
B.5 18x56 shows a view 194 ft wide at 1,000 yd, at or above the 194 ft median of the 5 18x56 models in the chart.
B.5 18x56: can it go on a tripod?
B.5 18x56 is tripod adaptable according to Maven, so it accepts a binocular tripod adapter.