Vortex Kaibab HD 18x56 specs and field of view
At 18x the Kaibab HD 18x56 has a 194 ft field of view, level with the median of its size, and an exit pupil that works out to 3.1 mm. Its 43.5 oz weight is below the 44.8 oz median.
- Field of view
- 194 ftat 1,000 yd
- Eye relief
- 16.4 mm
- Close focus
- 19.8 ft
- Weight
- 43.5 oz
- Exit pupil
- 3.1 mmcalculated
Why pick it
- 43.5 oz, lighter than the typical 44.8 oz
- 16.4 mm eye relief, enough for glasses
- Takes a tripod adapter
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Who the Kaibab HD 18x56 suits
The 16.4 mm eye relief and the tripod fit suit long, steady study of distant hillsides. The maker names hunting as a use, at a list price band of $1,000 to $2,000.
The 19.8 ft close focus is long, the view is narrow at 3.7 degrees, and 43.5 oz needs a tripod for steady use.
Kaibab HD 18x56 aside, the most popular models of all sizes are in our best binoculars comparison. Kaibab HD 18x56 is one of 5 models in the 18x56 binoculars comparison. Vortex lists it in the $1,000 to $2,000 price band, alongside the models in best binoculars over $1,000.
Kaibab HD 18x56 specifications
Kaibab HD 18x56 figures as Vortex prints them; rows marked * are calculated from the 18x56 size.
| Magnification | 18x |
|---|---|
| Objective lens | 56 mm |
| Field of view | 194 ft at 1,000 yd (65 m at 1,000 m) |
| Angular field of view | 3.7° |
| Apparent field of view | 67° * |
| Eye relief | 16.4 mm |
| Close focus | 19.8 ft (6 m) |
| Eye spacing range | 60 to 76 mm |
| Weight | 43.5 oz (1,233 g) |
| Length | 7.7 in (196 mm) |
| Width | 5.7 in (145 mm) |
| Fog-proofing gas | Argon |
| Tripod adaptable | Yes |
| Focus system | Center focus |
| Maker list price | $1,000 to $2,000 |
| Exit pupil | 3.1 mm * |
| Twilight factor | 31.7 * |
| Relative brightness | 9.7 * |
* Calculated from the size, not printed by the maker.
Kaibab HD 18x56 against other 18x56 binoculars
Kaibab HD 18x56 shows 194 ft at 1,000 yd, at or above the 194 ft median of the 5 18x56 models in the chart. At 43.5 oz it is at or under the 44.8 oz median weight for the size.
Kaibab HD 18x56 and its nearest rivals
Kaibab HD 18x56 next to the 18x56 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 Kaibab HD 18x56 | 194 ft | 16.4 mm | 19.8 ft | 43.5 oz | 3.1 mm | $1,000 to $2,000 | Check price on Amazon |
| Maven B.5 18x56 | 194 ft | 18 mm | 9.8 ft | 45 oz | 3.1 mm | $1,000 to $2,000 | |
| Maven B.5 18x56 MOA/MIL | 194 ft | 18 mm | 9.8 ft | 45 oz | 3.1 mm | $1,000 to $2,000 | |
| Maven C.4 18x56 | 194 ft | 16.4 mm | 16.4 ft | 44.8 oz | 3.1 mm | $500 to $1,000 | Check price on Amazon |
Lists that include the Kaibab HD 18x56
Vortex binoculars
Kaibab HD 18x56 questions
Kaibab HD 18x56: does it work with glasses?
Kaibab HD 18x56 has 16.4 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
Kaibab HD 18x56: what does 18x56 mean?
Kaibab HD 18x56 magnifies 18 times through 56 mm front lenses, which works out to an exit pupil of 3.1 mm, the width of the beam of light that reaches each eye.
Kaibab HD 18x56: how wide is the view?
Kaibab HD 18x56 shows a view 194 ft wide at 1,000 yd, at or above the 194 ft median of the 5 18x56 models in the chart.
Kaibab HD 18x56: can it go on a tripod?
Kaibab HD 18x56 is tripod adaptable according to Vortex, so it accepts a binocular tripod adapter.