Nikon Aculon T51 10x24 specs and field of view
At 7.1 oz and 8.2 ft close focus, the Aculon T51 is light and close focusing, with a 279 ft field.
- Field of view
- 279 ftat 1,000 yd
- Eye relief
- 10.6 mm
- Close focus
- 8.2 ft
- Weight
- 7.1 oz
- Exit pupil
- 2.4 mmcalculated
Why pick it
- Focuses as close as 8.2 ft
Who the Aculon T51 10x24 suits
The 7.1 oz weight and 8.2 ft close focus suit travel and nearby viewing, with a 56 to 72 eye spacing range.
Eye relief is 10.6 mm, a short figure for glasses, and the calculated exit pupil is 2.4 mm.
Aculon T51 10x24 aside, the most popular models of all sizes are in our best binoculars comparison.
Aculon T51 10x24 specifications
Aculon T51 10x24 figures as Nikon prints them; rows marked * are calculated from the 10x24 size.
| Magnification | 10x |
|---|---|
| Objective lens | 24 mm |
| Prism type | Roof |
| Field of view | 279 ft at 1,000 yd (93 m at 1,000 m) |
| Angular field of view | 5.3° |
| Apparent field of view | 49.7° |
| Eye relief | 10.6 mm |
| Close focus | 8.2 ft (2.5 m) |
| Eye spacing range | 56 to 72 mm |
| Weight | 7.1 oz (200 g) |
| Length | 4 in (102 mm) |
| Width | 4.1 in (105 mm) |
| Exit pupil | 2.4 mm * |
| Twilight factor | 15.5 * |
| Relative brightness | 5.8 * |
* Calculated from the size, not printed by the maker.
Other sizes of the Aculon T51
Nikon makes the Aculon T51 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 |
|---|---|---|---|---|---|---|
| Nikon Aculon T51 10x24 | 10x24 | 279 ft | 10.6 mm | 8.2 ft | 7.1 oz | 2.4 mm |
| Nikon Aculon T51 8x24 | 8x24 | 324 ft | 12.2 mm | 8.2 ft | 7.1 oz | 3 mm |
Nikon binoculars
Aculon T51 10x24 questions
Aculon T51 10x24: does it work with glasses?
Aculon T51 10x24 has 10.6 mm of eye relief, well short of the 16 mm the RSPB advises for people who wear glasses.
Aculon T51 10x24: what does 10x24 mean?
Aculon T51 10x24 magnifies 10 times through 24 mm front lenses, which works out to an exit pupil of 2.4 mm, the width of the beam of light that reaches each eye.