GPO Passion HD 15x50 specs and field of view
At 15x it magnifies more than any other GPO Passion HD model, with a 266 ft field of view and a twilight factor that works out to 27.4.
- Field of view
- 266 ftat 1,000 yd
- Eye relief
- 16.5 mm
- Close focus
- 9.8 ft
- Weight
- 34.1 oz
- Exit pupil
- 3.3 mmcalculated
Why pick it
- Widest view of the 2: 266 ft
- Lightest of the 2: 34.1 oz
- Longest eye relief of the 2: 16.5 mm
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Who the Passion HD 15x50 suits
Far subjects such as distant boats or peaks suit the power. Eye relief of 16.5 mm leaves some room for glasses.
The calculated exit pupil is 3.3 mm and weight is 34.1 oz, so a steady rest helps and dim light is a weakness.
Passion HD 15x50 or another model: the best binoculars by maker figures shows how the popular ones differ. GPO lists it in the $1,000 to $2,000 price band, alongside the models in best binoculars over $1,000.
Passion HD 15x50 specifications
Passion HD 15x50 figures as GPO prints them; rows marked * are calculated from the 15x50 size.
| Magnification | 15x |
|---|---|
| Objective lens | 50 mm |
| Prism type | Roof |
| Field of view | 266 ft at 1,000 yd (89 m at 1,000 m) |
| Angular field of view | 5.1° |
| Apparent field of view | 76° * |
| Eye relief | 16.5 mm |
| Close focus | 9.8 ft (3 m) |
| Eye spacing range | 58 to 76 mm |
| Weight | 34.1 oz (967 g) |
| Waterproofing | 500 mbar |
| Maker list price | $1,000 to $2,000 |
| Exit pupil | 3.3 mm * |
| Twilight factor | 27.4 * |
| Relative brightness | 11.1 * |
* Calculated from the size, not printed by the maker.
Passion HD 15x50 and its nearest rivals
Passion HD 15x50 next to the 15x50 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 |
|---|---|---|---|---|---|---|---|
| GPO Passion HD 15x50 | 266 ft | 16.5 mm | 9.8 ft | 34.1 oz | 3.3 mm | $1,000 to $2,000 | Check price on Amazon |
| Canon 15x50 IS All Weather | 237 ft | 15 mm | 19.7 ft | 41.6 oz | 3.3 mm |
Other sizes of the Passion HD
GPO makes the Passion HD 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 |
|---|---|---|---|---|---|---|---|
| GPO Passion HD 15x50 | 15x50 | 266 ft | 16.5 mm | 9.8 ft | 34.1 oz | 3.3 mm | Check price on Amazon |
| GPO Passion HD 8x42 | 8x42 | 375 ft | 19.5 mm | 6.5 ft | 29.3 oz | 5.3 mm | |
| GPO Passion HD 10x42 | 10x42 | 366 ft | 17 mm | 6.5 ft | 29.6 oz | 4.2 mm | |
| GPO Passion HD 8.5x50 | 8.5x50 | 315 ft | 19.5 mm | 9.8 ft | 33.2 oz | 5.9 mm | |
| GPO Passion HD 10x50 | 10x50 | 309 ft | 19.5 mm | 9.8 ft | 33.9 oz | 5 mm | |
| GPO Passion HD 12.5x50 | 12.5x50 | 286 ft | 16.5 mm | 9.8 ft | 34.1 oz | 4 mm | Check price on Amazon |
GPO binoculars
Passion HD 15x50 questions
Passion HD 15x50: does it work with glasses?
Passion HD 15x50 has 16.5 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
Passion HD 15x50: what does 15x50 mean?
Passion HD 15x50 magnifies 15 times through 50 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.