Leupold BX-3 Alpine HD 10x42 specs and field of view
The BX-3 Alpine HD 10x42 focuses to 6.2 ft, against a 6.6 ft median for 10x42 models, and 22.6 oz is lighter than the 24.9 oz median. The 342 ft field sits 25th of 87.
- Field of view
- 342 ftat 1,000 yd
- Eye relief
- 16 mm
- Close focus
- 6.2 ft
- Weight
- 22.6 oz
- Exit pupil
- 4.2 mmcalculated
Why pick it
- 342 ft view, wider than the typical 336 ft
- 22.6 oz, lighter than the typical 24.9 oz
- 16 mm eye relief, enough for glasses
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Who the BX-3 Alpine HD 10x42 suits
Close subjects, long carries and glasses wearers with 16 mm of eye relief all fit these figures. The maker list price band is $200 to $500, and the body is waterproof and fogproof.
The exit pupil works out to 4.2 mm, so dusk performance is modest next to 8x42 models, and the field is only a little wider than the 336 ft median.
BX-3 Alpine HD 10x42 or another model: the best binoculars by maker figures shows how the popular ones differ. BX-3 Alpine HD 10x42 is one of 87 models in the 10x42 binoculars comparison. Leupold lists it in the $200 to $500 price band, alongside the models in best binoculars under $500.
BX-3 Alpine HD 10x42 specifications
BX-3 Alpine HD 10x42 figures as Leupold prints them; rows marked * are calculated from the 10x42 size.
| Magnification | 10x |
|---|---|
| Objective lens | 42 mm |
| Field of view | 342 ft at 1,000 yd (114 m at 1,000 m) |
| Angular field of view | 6.5° |
| Apparent field of view | 65° * |
| Eye relief | 16 mm |
| Close focus | 6.2 ft (1.9 m) |
| Eye spacing range | 56 to 74 mm |
| Weight | 22.6 oz (641 g) |
| Waterproofing | Waterproof and fogproof |
| Tripod adaptable | Yes |
| Focus system | Center focus |
| Maker list price | $200 to $500 |
| Exit pupil | 4.2 mm * |
| Twilight factor | 20.5 * |
| Relative brightness | 17.6 * |
* Calculated from the size, not printed by the maker.
BX-3 Alpine HD 10x42 against other 10x42 binoculars
BX-3 Alpine HD 10x42 shows 342 ft at 1,000 yd, at or above the 336 ft median of the 87 10x42 models in the chart. At 22.6 oz it is at or under the 24.9 oz median weight for the size.
BX-3 Alpine HD 10x42 and its nearest rivals
BX-3 Alpine HD 10x42 next to the 10x42 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 |
|---|---|---|---|---|---|---|---|
| Leupold BX-3 Alpine HD 10x42 | 342 ft | 16 mm | 6.2 ft | 22.6 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Athlon Argos G2 UHD 10x42 | 319 ft | 16.1 mm | 13 ft | 25.5 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Kowa SV III 10x42 | 400 ft | 15.5 mm | 9.8 ft | 19.6 oz | 4.2 mm | $200 to $500 | |
| Burris Droptine HD 10x42 | 330 ft | 7.5 ft | 26 oz | 4.2 mm | $200 to $500 |
Other sizes of the BX-3 Alpine HD
Leupold makes the BX-3 Alpine HD in 2 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 | Amazon |
|---|---|---|---|---|---|---|---|
| Leupold BX-3 Alpine HD 10x42 | 10x42 | 342 ft | 16 mm | 6.2 ft | 22.6 oz | 4.2 mm | Check price on Amazon |
| Leupold BX-3 Alpine HD 12x50 | 12x50 | 278 ft | 15.5 mm | 7.2 ft | 29.2 oz | 4.2 mm | Check price on Amazon |
Leupold binoculars
BX-3 Alpine HD 10x42 questions
BX-3 Alpine HD 10x42: does it work with glasses?
BX-3 Alpine HD 10x42 has 16 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
BX-3 Alpine HD 10x42: what does 10x42 mean?
BX-3 Alpine HD 10x42 magnifies 10 times through 42 mm front lenses, which works out to an exit pupil of 4.2 mm, the width of the beam of light that reaches each eye.
BX-3 Alpine HD 10x42: how wide is the view?
BX-3 Alpine HD 10x42 shows a view 342 ft wide at 1,000 yd, at or above the 336 ft median of the 87 10x42 models in the chart.
BX-3 Alpine HD 10x42: can it go on a tripod?
BX-3 Alpine HD 10x42 is tripod adaptable according to Leupold, so it accepts a binocular tripod adapter.