Leupold BX-3 Alpine HD 12x50 specs and field of view
The BX-3 Alpine HD 12x50 focuses to 7.2 ft, much shorter than the 10 ft median for 12x50 models. Its 278 ft field at 1,000 yd is just above the 277 ft median, placing it 18th of 36.
- Field of view
- 278 ftat 1,000 yd
- Eye relief
- 15.5 mm
- Close focus
- 7.2 ft
- Weight
- 29.2 oz
- Exit pupil
- 4.2 mmcalculated
Why pick it
- 278 ft view, wider than the typical 277 ft
- Focuses as close as 7.2 ft
- Waterproof
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Who the BX-3 Alpine HD 12x50 suits
Close subjects and a steady view from a tripod suit these figures. The 29.2 oz weight equals the median, and the maker list price band is $200 to $500.
Eye relief of 15.5 mm matches the 15.5 mm median, and the 12x view demands a steady hold.
BX-3 Alpine HD 12x50 or another model: the best binoculars by maker figures shows how the popular ones differ. BX-3 Alpine HD 12x50 is one of 36 models in the 12x50 binoculars comparison. Leupold lists it in the $200 to $500 price band, alongside the models in best binoculars under $500.
BX-3 Alpine HD 12x50 specifications
BX-3 Alpine HD 12x50 figures as Leupold prints them; rows marked * are calculated from the 12x50 size.
| Magnification | 12x |
|---|---|
| Objective lens | 50 mm |
| Field of view | 278 ft at 1,000 yd (93 m at 1,000 m) |
| Angular field of view | 5.3° |
| Apparent field of view | 64° * |
| Eye relief | 15.5 mm |
| Close focus | 7.2 ft (2.2 m) |
| Eye spacing range | 58 to 74 mm |
| Weight | 29.2 oz (828 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 | 24.5 * |
| Relative brightness | 17.4 * |
* Calculated from the size, not printed by the maker.
BX-3 Alpine HD 12x50 against other 12x50 binoculars
BX-3 Alpine HD 12x50 shows 278 ft at 1,000 yd, at or above the 277 ft median of the 36 12x50 models in the chart. At 29.2 oz it is at or under the 29.2 oz median weight for the size.
BX-3 Alpine HD 12x50 and its nearest rivals
BX-3 Alpine HD 12x50 next to the 12x50 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 12x50 | 278 ft | 15.5 mm | 7.2 ft | 29.2 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Vortex Diamondback HD 12x50 | 271 ft | 14 mm | 6 ft | 28.9 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Hawke Endurance ED 12x50 | 272 ft | 15 mm | 8.2 ft | 28.4 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Nikon Monarch M5 12x50 | 293 ft | 16.4 mm | 14.8 ft | 22.9 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 12x50 | 12x50 | 278 ft | 15.5 mm | 7.2 ft | 29.2 oz | 4.2 mm | Check price on 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 binoculars
BX-3 Alpine HD 12x50 questions
BX-3 Alpine HD 12x50: does it work with glasses?
BX-3 Alpine HD 12x50 has 15.5 mm of eye relief, under the 16 mm the RSPB advises for people who wear glasses, so the edge of the view may be cut off with glasses on.
BX-3 Alpine HD 12x50: what does 12x50 mean?
BX-3 Alpine HD 12x50 magnifies 12 times through 50 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 12x50: how wide is the view?
BX-3 Alpine HD 12x50 shows a view 278 ft wide at 1,000 yd, at or above the 277 ft median of the 36 12x50 models in the chart.
BX-3 Alpine HD 12x50: can it go on a tripod?
BX-3 Alpine HD 12x50 is tripod adaptable according to Leupold, so it accepts a binocular tripod adapter.