4.78 m
Hyperfocal distance
2.39 m
Sharp from (focused at hyperfocal)
40 mm f/11.2
Full-frame equivalent
57°
Diagonal angle of view
Depth of field by subject distance#
20 mm at f/5.6 on Micro Four Thirds (17.3×13 mm), circle of confusion 15 µm. “Background blur” is the size of an out-of-focus light at infinity as a percentage of frame width.
| Focus distance | Near limit | Far limit | Total DoF | Front / behind | Background blur |
|---|---|---|---|---|---|
| 30.0 cm (0.98 ft) | 28.3 cm | 31.9 cm | 3.5 cm | 47% / 53% | 1.47% |
| 50.0 cm (1.64 ft) | 45.4 cm | 55.6 cm | 10.2 cm | 45% / 55% | 0.86% |
| 75.0 cm (2.46 ft) | 65.0 cm | 88.6 cm | 23.5 cm | 42% / 58% | 0.57% |
| 1.00 m (3.28 ft) | 82.9 cm | 1.26 m | 43.0 cm | 40% / 60% | 0.42% |
| 1.50 m (4.92 ft) | 1.14 m | 2.18 m | 1.03 m | 34% / 66% | 0.28% |
| 2.00 m (6.56 ft) | 1.41 m | 3.42 m | 2.01 m | 29% / 71% | 0.21% |
| 3.00 m (9.84 ft) | 1.85 m | 8.02 m | 6.17 m | 19% / 81% | 0.14% |
| 4.00 m (13.1 ft) | 2.18 m | 24.4 m | 22.2 m | 8% / 92% | 0.10% |
| 5.00 m (16.4 ft) | 2.44 m | ∞ | ∞ | — | 0.08% |
| 7.00 m (23.0 ft) | 2.84 m | ∞ | ∞ | — | 0.06% |
| 10.0 m (32.8 ft) | 3.23 m | ∞ | ∞ | — | 0.04% |
| 15.0 m (49.2 ft) | 3.62 m | ∞ | ∞ | — | 0.03% |
| 20.0 m (65.6 ft) | 3.85 m | ∞ | ∞ | — | 0.02% |
| 30.0 m (98.4 ft) | 4.11 m | ∞ | ∞ | — | 0.01% |
| 50.0 m (164 ft) | 4.35 m | ∞ | ∞ | — | 0.01% |
| 100 m (328 ft) | 4.55 m | ∞ | ∞ | — | 0.00% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
20 mm at other apertures (subject at 3 m)#
Other focal lengths at f/5.6#
| Focal length | Subject at | Total DoF |
|---|---|---|
| 14 mm | 3.00 m | ∞ |
| 16 mm | 3.00 m | 142 m |
| 20 mm | 3.00 m | 6.17 m |
| 24 mm | 3.00 m | 3.21 m |
| 28 mm | 3.00 m | 2.13 m |
| 35 mm | 3.00 m | 1.27 m |
| 40 mm | 3.00 m | 95.5 cm |
| 50 mm | 3.00 m | 60.1 cm |
| 85 mm | 3.00 m | 20.4 cm |
| 105 mm | 3.00 m | 13.2 cm |
| 135 mm | 3.00 m | 7.9 cm |
| 200 mm | 10.0 m | 41.2 cm |
| 300 mm | 10.0 m | 18.1 cm |
| 400 mm | 10.0 m | 10.1 cm |
| 600 mm | 10.0 m | 4.4 cm |
Same lens settings on other formats#
When to use it#
At f/5.6, a 20 mm lens on Micro Four Thirds is a natural choice for general photography. Focused at 3 m you get 6.17 m of sharp zone; for maximum front-to-back sharpness focus at 4.78 m and everything from 2.39 m to infinity will be acceptably sharp.
See also the f/5.6 aperture guide.
Frequently asked questions#
What is the depth of field of a 20mm lens at f/5.6?
On Micro Four Thirds, focused at 3 m, it is 6.17 m; at 1 m it is 43.0 cm.
What is the hyperfocal distance for 20mm f/5.6?
4.78 m (15.7 ft) on Micro Four Thirds. Everything from 2.39 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources