Kowa Genesis Prominar 10x33 specs and field of view
The Genesis Prominar 10x33 packs 10x power into 20.8 oz, with a 357 ft field of view at 1,000 yd and a close focus of 4.9 ft.
- Field of view
- 357 ftat 1,000 yd
- Eye relief
- 15 mm
- Close focus
- 4.9 ft
- Weight
- 20.8 oz
- Exit pupil
- 3.3 mmcalculated
Why pick it
- Widest view of the 3: 357 ft
- Focuses as close as 4.9 ft
- Waterproof
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Who the Genesis Prominar 10x33 suits
A 4.9 ft close focus suits near subjects, and the weight suits a day of walking. The calculated 3.3 mm exit pupil fits bright daylight viewing.
Short 15 mm eye relief is a poor fit for eyeglass wearers, the calculated exit pupil is small for dusk, and the band is $1,000 to $2,000.
Genesis Prominar 10x33 can be set against the most popular models of every size in the best binoculars list. Kowa lists it in the $1,000 to $2,000 price band, alongside the models in best binoculars over $1,000.
Genesis Prominar 10x33 specifications
Genesis Prominar 10x33 figures as Kowa prints them; rows marked * are calculated from the 10x33 size.
| Magnification | 10x |
|---|---|
| Objective lens | 33 mm |
| Field of view | 357 ft at 1,000 yd (119 m at 1,000 m) |
| Angular field of view | 6.8° |
| Apparent field of view | 68° * |
| Eye relief | 15 mm |
| Close focus | 4.9 ft (1.5 m) |
| Weight | 20.8 oz (590 g) |
| Length | 2 in (133 mm) |
| Width | 5 in (126 mm) |
| Extra-low dispersion glass | Yes |
| Waterproofing | Waterproof, nitrogen filled |
| Fog-proofing gas | Nitrogen |
| Maker list price | $1,000 to $2,000 |
| Exit pupil | 3.3 mm * |
| Twilight factor | 18.2 * |
| Relative brightness | 10.9 * |
* Calculated from the size, not printed by the maker.
Genesis Prominar 10x33 against other 10x33 binoculars
Genesis Prominar 10x33 shows 357 ft at 1,000 yd, at or above the 345 ft median of the 3 10x33 models in the chart. At 20.8 oz it is heavier than the 20.1 oz median for the size.
Genesis Prominar 10x33 and its nearest rivals
Genesis Prominar 10x33 next to the 10x33 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 |
|---|---|---|---|---|---|---|---|
| Kowa Genesis Prominar 10x33 | 357 ft | 15 mm | 4.9 ft | 20.8 oz | 3.3 mm | $1,000 to $2,000 | Check price on Amazon |
| Opticron Savanna R PC Oasis 10x33 | 318 ft | 17 mm | 11.5 ft | 14.6 oz | 3.3 mm | $100 to $200 | |
| Minox X-active 10x33 | 345 ft | 8.2 ft | 20.1 oz | 3.3 mm |
Other sizes of the Genesis
Kowa makes the Genesis in 6 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 |
|---|---|---|---|---|---|---|---|
| Kowa Genesis Prominar 10x33 | 10x33 | 357 ft | 15 mm | 4.9 ft | 20.8 oz | 3.3 mm | Check price on Amazon |
| Kowa Genesis Prominar XD22 8x22 | 8x22 | 429 ft | 18.5 mm | 4.9 ft | 11.1 oz | 2.8 mm | Check price on Amazon |
| Kowa Genesis Prominar XD22 10x22 | 10x22 | 344 ft | 16 mm | 4.9 ft | 11.5 oz | 2.2 mm | Check price on Amazon |
| Kowa Genesis Prominar 8x33 | 8x33 | 420 ft | 15 mm | 4.9 ft | 20.8 oz | 4.1 mm | |
| Kowa Genesis Prominar 8.5x44 | 8.5x44 | 368 ft | 18.5 mm | 5.6 ft | 33.2 oz | 5.2 mm | Check price on Amazon |
| Kowa Genesis Prominar 10.5x44 | 10.5x44 | 326 ft | 16 mm | 5.6 ft | 33.2 oz | 4.2 mm |
Kowa binoculars
Genesis Prominar 10x33 questions
Genesis Prominar 10x33: does it work with glasses?
Genesis Prominar 10x33 has 15 mm of eye relief, under the 16 mm the RSPB advises for people who wear glasses, so the edge of the view may be cut off with glasses on.
Genesis Prominar 10x33: what does 10x33 mean?
Genesis Prominar 10x33 magnifies 10 times through 33 mm front lenses, which works out to an exit pupil of 3.3 mm, the width of the beam of light that reaches each eye.