Nikon Aculon T51 8x24 specs and field of view
A 324 ft field and 7.1 oz weight define the Aculon T51, with 8.2 ft close focus.
- Field of view
- 324 ftat 1,000 yd
- Eye relief
- 12.2 mm
- Close focus
- 8.2 ft
- Weight
- 7.1 oz
- Exit pupil
- 3 mmcalculated
Why pick it
- Lightest of the 2: 7.1 oz
- Focuses as close as 8.2 ft
Who the Aculon T51 8x24 suits
The 324 ft field and 8.2 ft close focus suit casual viewing of nearby things, and the 7.1 oz weight carries easily. The calculated exit pupil is 3 mm.
Eye relief is 12.2 mm, short for glasses, and the field is narrower than larger 8x models.
Aculon T51 8x24 is one choice among many, and the top binoculars compared covers the most popular ones.
Aculon T51 8x24 specifications
Aculon T51 8x24 figures as Nikon prints them; rows marked * are calculated from the 8x24 size.
| Magnification | 8x |
|---|---|
| Objective lens | 24 mm |
| Prism type | Roof |
| Field of view | 324 ft at 1,000 yd (108 m at 1,000 m) |
| Angular field of view | 6.2° |
| Apparent field of view | 46.9° |
| Eye relief | 12.2 mm |
| Close focus | 8.2 ft (2.5 m) |
| Eye spacing range | 56 to 72 mm |
| Weight | 7.1 oz (200 g) |
| Length | 4.1 in (103 mm) |
| Width | 4.1 in (105 mm) |
| Exit pupil | 3 mm * |
| Twilight factor | 13.9 * |
| Relative brightness | 9 * |
* Calculated from the size, not printed by the maker.
Aculon T51 8x24 and its nearest rivals
Aculon T51 8x24 next to the 8x24 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 |
|---|---|---|---|---|---|---|
| Nikon Aculon T51 8x24 | 324 ft | 12.2 mm | 8.2 ft | 7.1 oz | 3 mm | |
| Steiner T824 | 342 ft | 14 mm | 6 ft | 12 oz | 3 mm | $200 to $500 |
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 8x24 | 8x24 | 324 ft | 12.2 mm | 8.2 ft | 7.1 oz | 3 mm |
| Nikon Aculon T51 10x24 | 10x24 | 279 ft | 10.6 mm | 8.2 ft | 7.1 oz | 2.4 mm |
Nikon binoculars
Aculon T51 8x24 questions
Aculon T51 8x24: does it work with glasses?
Aculon T51 8x24 has 12.2 mm of eye relief, well short of the 16 mm the RSPB advises for people who wear glasses.
Aculon T51 8x24: what does 8x24 mean?
Aculon T51 8x24 magnifies 8 times through 24 mm front lenses, which works out to an exit pupil of 3 mm, the width of the beam of light that reaches each eye.