Opticron Discovery WA ED 10x42 specs and field of view
The Discovery WA ED 10x42 focuses as close as 4.9 ft, well inside the 6.6 ft median for 10x42 models. Its 330 ft field places 52nd of 87 in the size.
- Field of view
- 330 ftat 1,000 yd
- Eye relief
- 16 mm
- Close focus
- 4.9 ft
- Weight
- 23.6 oz
- Exit pupil
- 4.2 mmcalculated
Why pick it
- 23.6 oz, lighter than the typical 24.9 oz
- 16 mm eye relief, enough for glasses
- Focuses as close as 4.9 ft
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Who the Discovery WA ED 10x42 suits
Near subjects such as insects and flowers suit the 4.9 ft close focus. At 23.6 oz it weighs less than the 24.9 oz median for the size, and the eye relief is 16 mm.
The 330 ft field falls just under the 336 ft median, and the exit pupil works out to a calculated 4.2 mm.
Discovery WA ED 10x42 aside, the most popular models of all sizes are in our best binoculars comparison. Discovery WA ED 10x42 is one of 87 models in the 10x42 binoculars comparison. Opticron lists it in the $200 to $500 price band, alongside the models in best binoculars under $500.
Discovery WA ED 10x42 specifications
Discovery WA ED 10x42 figures as Opticron prints them; rows marked * are calculated from the 10x42 size.
| Magnification | 10x |
|---|---|
| Objective lens | 42 mm |
| Field of view | 330 ft at 1,000 yd (110 m at 1,000 m) |
| Angular field of view | 6.3° |
| Apparent field of view | 63° * |
| Eye relief | 16 mm |
| Close focus | 4.9 ft (1.5 m) |
| Eye spacing range | 59 to 76 mm |
| Weight | 23.6 oz (669 g) |
| Extra-low dispersion glass | Yes |
| Waterproofing | Waterproof |
| Maker list price | $200 to $500 |
| Exit pupil | 4.2 mm * |
| Twilight factor | 20.5 * |
| Relative brightness | 17.6 * |
* Calculated from the size, not printed by the maker.
Discovery WA ED 10x42 against other 10x42 binoculars
Discovery WA ED 10x42 shows 330 ft at 1,000 yd, below the 336 ft median of the 87 10x42 models in the chart. At 23.6 oz it is at or under the 24.9 oz median weight for the size.
Discovery WA ED 10x42 and its nearest rivals
Discovery WA ED 10x42 next to the 10x42 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 |
|---|---|---|---|---|---|---|---|
| Opticron Discovery WA ED 10x42 | 330 ft | 16 mm | 4.9 ft | 23.6 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Celestron TrailSeeker 10x42 | 341 ft | 15 mm | 6.5 ft | 22.4 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Vortex Diamondback HD 10x42 | 330 ft | 15 mm | 5 ft | 21.3 oz | 4.2 mm | $200 to $500 | Check price on Amazon |
| Burris Droptine HD 10x42 | 330 ft | 7.5 ft | 26 oz | 4.2 mm | $200 to $500 |
Other sizes of the Discovery WA ED
Opticron makes the Discovery WA ED in 4 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 |
|---|---|---|---|---|---|---|---|
| Opticron Discovery WA ED 10x42 | 10x42 | 330 ft | 16 mm | 4.9 ft | 23.6 oz | 4.2 mm | Check price on Amazon |
| Opticron Discovery WA ED 8x32 | 8x32 | 420 ft | 18 mm | 3.9 ft | 13.8 oz | 4 mm | Check price on Amazon |
| Opticron Discovery WA ED 10x32 | 10x32 | 318 ft | 15.5 mm | 4.3 ft | 13.8 oz | 3.2 mm | |
| Opticron Discovery WA ED 8x42 | 8x42 | 393 ft | 19 mm | 4.9 ft | 23.9 oz | 5.3 mm | Check price on Amazon |
Opticron binoculars
Discovery WA ED 10x42 questions
Discovery WA ED 10x42: does it work with glasses?
Discovery WA ED 10x42 has 16 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
Discovery WA ED 10x42: what does 10x42 mean?
Discovery WA ED 10x42 magnifies 10 times through 42 mm front lenses, which works out to an exit pupil of 4.2 mm, the width of the beam of light that reaches each eye.
Discovery WA ED 10x42: how wide is the view?
Discovery WA ED 10x42 shows a view 330 ft wide at 1,000 yd, below the 336 ft median of the 87 10x42 models in the chart.