Vortex Diamondback HD 8x28 specs and field of view
At 13.7 oz the Diamondback HD 8x28 is a light compact, with 18 mm of eye relief and a 6 ft close focus.
- Field of view
- 332 ftat 1,000 yd
- Eye relief
- 18 mm
- Close focus
- 6 ft
- Weight
- 13.7 oz
- Exit pupil
- 3.5 mmcalculated
Why pick it
- Longest eye relief of the 2: 18 mm
- Focuses as close as 6 ft
- Takes a tripod adapter
Binocular Chart earns a commission from qualifying Amazon purchases made through these buttons.
Who the Diamondback HD 8x28 suits
Wearers of eyeglasses get 18 mm of eye relief, and pocket carries suit the 13.7 oz weight. Its field reads 332 ft.
The exit pupil is calculated as 3.5 mm, so dim light shows less than a 42 mm model gives.
Diamondback HD 8x28 aside, the most popular models of all sizes are in our best binoculars comparison. Vortex lists it in the $200 to $500 price band, alongside the models in best binoculars under $500.
Diamondback HD 8x28 specifications
Diamondback HD 8x28 figures as Vortex prints them; rows marked * are calculated from the 8x28 size.
| Magnification | 8x |
|---|---|
| Objective lens | 28 mm |
| Field of view | 332 ft at 1,000 yd (111 m at 1,000 m) |
| Angular field of view | 6.2° |
| Apparent field of view | 50° * |
| Eye relief | 18 mm |
| Close focus | 6 ft (1.8 m) |
| Eye spacing range | 55 to 72 mm |
| Weight | 13.7 oz (388 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 | 3.5 mm * |
| Twilight factor | 15 * |
| Relative brightness | 12.3 * |
* Calculated from the size, not printed by the maker.
Diamondback HD 8x28 and its nearest rivals
Diamondback HD 8x28 next to the 8x28 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 8x28 | 332 ft | 18 mm | 6 ft | 13.7 oz | 3.5 mm | $200 to $500 | Check price on Amazon |
| GPO Passion SD 8x26 | 536 ft | 16 mm | 9.8 ft | 11.4 oz | 3.5 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 8x28 | 8x28 | 332 ft | 18 mm | 6 ft | 13.7 oz | 3.5 mm | Check price on 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 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 |
Lists that include the Diamondback HD 8x28
Vortex binoculars
Diamondback HD 8x28 questions
Diamondback HD 8x28: does it work with glasses?
Diamondback HD 8x28 has 18 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
Diamondback HD 8x28: what does 8x28 mean?
Diamondback HD 8x28 magnifies 8 times through 28 mm front lenses, which works out to an exit pupil of 3.5 mm, the width of the beam of light that reaches each eye.
Diamondback HD 8x28: can it go on a tripod?
Diamondback HD 8x28 is tripod adaptable according to Vortex, so it accepts a binocular tripod adapter.