Vortex Diamondback HD 10x28 specs and field of view
At 13.3 oz the Diamondback HD 10x28 is a compact 10x28, with a 273 ft field at place 3 of 5 in its size.
- Field of view
- 273 ftat 1,000 yd
- Eye relief
- 16 mm
- Close focus
- 6 ft
- Weight
- 13.3 oz
- Exit pupil
- 2.8 mmcalculated
Why pick it
- Longest eye relief of the 5: 16 mm
- Focuses as close as 6 ft
- Takes a tripod adapter
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Who the Diamondback HD 10x28 suits
Pocket carries suit the 13.3 oz weight, and eye relief of 16 mm suits eyeglass wearers. Close focus is 6 ft against a 9.8 ft median.
The calculated exit pupil of 2.8 mm is the smallest here, so dim light is its weak point.
Diamondback HD 10x28 can be set against the most popular models of every size in the best binoculars list. Diamondback HD 10x28 is one of 5 models in the 10x28 binoculars comparison. Vortex lists it in the $200 to $500 price band, alongside the models in best binoculars under $500.
Diamondback HD 10x28 specifications
Diamondback HD 10x28 figures as Vortex prints them; rows marked * are calculated from the 10x28 size.
| Magnification | 10x |
|---|---|
| Objective lens | 28 mm |
| Field of view | 273 ft at 1,000 yd (91 m at 1,000 m) |
| Angular field of view | 5.1° |
| Apparent field of view | 51° * |
| Eye relief | 16 mm |
| Close focus | 6 ft (1.8 m) |
| Eye spacing range | 57 to 73 mm |
| Weight | 13.3 oz (377 g) |
| Length | 4.6 in (117 mm) |
| Width | 4.5 in (114 mm) |
| Fog-proofing gas | Argon |
| Tripod adaptable | Yes |
| Focus system | Center focus |
| Maker list price | $200 to $500 |
| Exit pupil | 2.8 mm * |
| Twilight factor | 16.7 * |
| Relative brightness | 7.8 * |
* Calculated from the size, not printed by the maker.
Diamondback HD 10x28 against other 10x28 binoculars
Diamondback HD 10x28 shows 273 ft at 1,000 yd, at or above the 273 ft median of the 5 10x28 models in the chart. At 13.3 oz it is heavier than the 12.7 oz median for the size.
Diamondback HD 10x28 and its nearest rivals
Diamondback HD 10x28 next to the 10x28 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 |
|---|---|---|---|---|---|---|---|
| Vortex Diamondback HD 10x28 | 273 ft | 16 mm | 6 ft | 13.3 oz | 2.8 mm | $200 to $500 | Check price on Amazon |
| Maven C.2 10x28 | 262 ft | 15 mm | 9.8 ft | 12.6 oz | 2.8 mm | $200 to $500 | Check price on Amazon |
| GPO Passion SD 10x26 | 293 ft | 14.1 mm | 9.8 ft | 11.6 oz | 2.8 mm | $200 to $500 | |
| Steiner T1028 | 263 ft | 14 mm | 6 ft | 12.7 oz | 2.8 mm | $200 to $500 |
Other sizes of the Diamondback HD
Vortex makes the Diamondback HD in 9 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 |
|---|---|---|---|---|---|---|---|
| Vortex Diamondback HD 10x28 | 10x28 | 273 ft | 16 mm | 6 ft | 13.3 oz | 2.8 mm | Check price on Amazon |
| Vortex Diamondback HD 8x28 | 8x28 | 332 ft | 18 mm | 6 ft | 13.7 oz | 3.5 mm | Check price on Amazon |
| Vortex Diamondback HD 8x32 | 8x32 | 426 ft | 16 mm | 5 ft | 15.9 oz | 4 mm | Check price on Amazon |
| Vortex Diamondback HD 10x32 | 10x32 | 340 ft | 14 mm | 6 ft | 16 oz | 3.2 mm | Check price on Amazon |
| Vortex Diamondback HD 8x42 | 8x42 | 393 ft | 17 mm | 5 ft | 21.8 oz | 5.3 mm | Check price on Amazon |
| Vortex Diamondback HD 10x42 | 10x42 | 330 ft | 15 mm | 5 ft | 21.3 oz | 4.2 mm | Check price on Amazon |
| Vortex Diamondback HD 10x50 | 10x50 | 315 ft | 17 mm | 6 ft | 30 oz | 5 mm | Check price on Amazon |
| Vortex Diamondback HD 12x50 | 12x50 | 271 ft | 14 mm | 6 ft | 28.9 oz | 4.2 mm | Check price on Amazon |
| Vortex Diamondback HD 15x56 | 15x56 | 230 ft | 15.6 mm | 14 ft | 34.8 oz | 3.7 mm | Check price on Amazon |
Vortex binoculars
Diamondback HD 10x28 questions
Diamondback HD 10x28: does it work with glasses?
Diamondback HD 10x28 has 16 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
Diamondback HD 10x28: what does 10x28 mean?
Diamondback HD 10x28 magnifies 10 times through 28 mm front lenses, which works out to an exit pupil of 2.8 mm, the width of the beam of light that reaches each eye.
Diamondback HD 10x28: how wide is the view?
Diamondback HD 10x28 shows a view 273 ft wide at 1,000 yd, at or above the 273 ft median of the 5 10x28 models in the chart.
Diamondback HD 10x28: can it go on a tripod?
Diamondback HD 10x28 is tripod adaptable according to Vortex, so it accepts a binocular tripod adapter.