Nikon Aculon W10 10x21 specs and field of view
Waterproof to 1 m for 10 minutes, the Aculon W10 weighs 7.6 oz and has a 261 ft field.
- Field of view
- 261 ftat 1,000 yd
- Eye relief
- 8.3 mm
- Close focus
- 9.8 ft
- Weight
- 7.6 oz
- Exit pupil
- 2.1 mmcalculated
Why pick it
- Waterproof
Who the Aculon W10 10x21 suits
The 1 m rating for 10 minutes and nitrogen fogproofing suit wet trips, and close focus is 9.8 ft. It is light at 7.6 oz.
Eye relief of 8.3 mm is short for glasses wearers, and the calculated exit pupil is 2.1 mm.
Aculon W10 10x21 aside, the most popular models of all sizes are in our best binoculars comparison.
Aculon W10 10x21 specifications
Aculon W10 10x21 figures as Nikon prints them; rows marked * are calculated from the 10x21 size.
| Magnification | 10x |
|---|---|
| Objective lens | 21 mm |
| Prism type | Roof |
| Field of view | 261 ft at 1,000 yd (87 m at 1,000 m) |
| Angular field of view | 5° |
| Apparent field of view | 47.2° |
| Eye relief | 8.3 mm |
| Close focus | 9.8 ft (3 m) |
| Eye spacing range | 56 to 72 mm |
| Weight | 7.6 oz (215 g) |
| Length | 3.4 in (87 mm) |
| Width | 4.3 in (110 mm) |
| Waterproofing | Up to 1 m / 3.3 ft for 10 minutes |
| Fog-proofing gas | Nitrogen |
| Focus system | Center focus |
| Exit pupil | 2.1 mm * |
| Twilight factor | 14.5 * |
| Relative brightness | 4.4 * |
* Calculated from the size, not printed by the maker.
Aculon W10 10x21 and its nearest rivals
Aculon W10 10x21 next to the 10x21 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 |
|---|---|---|---|---|---|---|---|
| Nikon Aculon W10 10x21 | 261 ft | 8.3 mm | 9.8 ft | 7.6 oz | 2.1 mm | ||
| Nikon Aculon T02 10x21 | 262 ft | 8.3 mm | 9.8 ft | 6.9 oz | 2.1 mm | under $100 | Check price on Amazon |
Binocular Chart earns a commission from qualifying Amazon purchases made through these buttons.
Other sizes of the Aculon W10
Nikon makes the Aculon W10 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 |
|---|---|---|---|---|---|---|---|
| Nikon Aculon W10 10x21 | 10x21 | 261 ft | 8.3 mm | 9.8 ft | 7.6 oz | 2.1 mm | |
| Nikon Aculon W10 8x21 | 8x21 | 330 ft | 10.3 mm | 9.8 ft | 7.6 oz | 2.6 mm | Check price on Amazon |
Nikon binoculars
Aculon W10 10x21 questions
Aculon W10 10x21: does it work with glasses?
Aculon W10 10x21 has 8.3 mm of eye relief, well short of the 16 mm the RSPB advises for people who wear glasses.
Aculon W10 10x21: what does 10x21 mean?
Aculon W10 10x21 magnifies 10 times through 21 mm front lenses, which works out to an exit pupil of 2.1 mm, the width of the beam of light that reaches each eye.