Canon 10x20 IS specs and field of view
At 15.2 oz, this body is light for a Canon IS model, with 10x magnification and a 279 ft (at 1,000 yd) field of view. Close focus is 6.6 ft.
- Field of view
- 279 ftat 1,000 yd
- Eye relief
- 13.5 mm
- Close focus
- 6.6 ft
- Weight
- 15.2 oz
- Exit pupil
- 2 mmcalculated
Why pick it
- Focuses as close as 6.6 ft
- Image stabilized
Who the 10x20 IS suits
A coat pocket and a day of travel suit the 15.2 oz weight. The 6.6 ft close focus helps with nearby subjects, and 13.5 mm of eye relief is enough for light use.
The 2 mm calculated exit pupil and relative brightness of 4 leave little light at dusk, so it is a daytime tool.
10x20 IS aside, the most popular models of all sizes are in our best binoculars comparison.
10x20 IS specifications
10x20 IS figures as Canon prints them; rows marked * are calculated from the 10x20 size.
| Magnification | 10x |
|---|---|
| Objective lens | 20 mm |
| Prism type | Porro |
| Field of view | 279 ft at 1,000 yd (93 m at 1,000 m) |
| Angular field of view | 5.3° |
| Apparent field of view | 49.5° |
| Eye relief | 13.5 mm |
| Close focus | 6.6 ft (2 m) |
| Weight | 15.2 oz (430 g) |
| Length | 5.6 in (142 mm) |
| Width | 4.6 in (118 mm) |
| Image stabilization | Yes |
| Exit pupil | 2 mm * |
| Twilight factor | 14.1 * |
| Relative brightness | 4 * |
* Calculated from the size, not printed by the maker.
Other sizes of the Canon IS
Canon makes the Canon IS in 10 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 |
|---|---|---|---|---|---|---|
| Canon 10x20 IS | 10x20 | 279 ft | 13.5 mm | 6.6 ft | 15.2 oz | 2 mm |
| Canon 8x20 IS | 8x20 | 345 ft | 13.5 mm | 6.6 ft | 14.8 oz | 2.5 mm |
| Canon 10x30 IS II | 10x30 | 315 ft | 14.5 mm | 13.8 ft | 21.2 oz | 3 mm |
| Canon 10x32 IS | 10x32 | 315 ft | 14.5 mm | 6.6 ft | 27.5 oz | 3.2 mm |
| Canon 12x32 IS | 12x32 | 261 ft | 14.5 mm | 6.6 ft | 27.5 oz | 2.7 mm |
| Canon 14x32 IS | 14x32 | 225 ft | 14.5 mm | 6.6 ft | 27.3 oz | 2.3 mm |
| Canon 12x36 IS III | 12x36 | 287 ft | 14.5 mm | 19.7 ft | 23.3 oz | 3 mm |
| Canon 10x42 L IS WP | 10x42 | 342 ft | 16 mm | 8.2 ft | 39.2 oz | 4.2 mm |
| Canon 15x50 IS All Weather | 15x50 | 237 ft | 15 mm | 19.7 ft | 41.6 oz | 3.3 mm |
| Canon 18x50 IS All Weather | 18x50 | 195 ft | 15 mm | 19.7 ft | 41.6 oz | 2.8 mm |
10x20 IS questions
10x20 IS: does it work with glasses?
10x20 IS has 13.5 mm of eye relief, well short of the 16 mm the RSPB advises for people who wear glasses.
10x20 IS: what does 10x20 mean?
10x20 IS magnifies 10 times through 20 mm front lenses, which works out to an exit pupil of 2 mm, the width of the beam of light that reaches each eye.