19.1 m
Hyperfocal distance
9.53 m
Sharp from (focused at hyperfocal)
40 mm f/2.8
Full-frame equivalent
57°
Diagonal angle of view
Depth of field by subject distance#
20 mm at f/1.4 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) | 29.6 cm | 30.4 cm | 0.9 cm | 49% / 51% | 5.90% |
| 50.0 cm (1.64 ft) | 48.8 cm | 51.3 cm | 2.5 cm | 49% / 51% | 3.44% |
| 75.0 cm (2.46 ft) | 72.2 cm | 78.0 cm | 5.8 cm | 48% / 52% | 2.26% |
| 1.00 m (3.28 ft) | 95.1 cm | 1.05 m | 10.3 cm | 47% / 53% | 1.69% |
| 1.50 m (4.92 ft) | 1.39 m | 1.63 m | 23.5 cm | 46% / 54% | 1.12% |
| 2.00 m (6.56 ft) | 1.81 m | 2.23 m | 42.0 cm | 45% / 55% | 0.83% |
| 3.00 m (9.84 ft) | 2.59 m | 3.56 m | 96.2 cm | 42% / 58% | 0.55% |
| 4.00 m (13.1 ft) | 3.31 m | 5.06 m | 1.75 m | 40% / 60% | 0.41% |
| 5.00 m (16.4 ft) | 3.96 m | 6.77 m | 2.81 m | 37% / 63% | 0.33% |
| 7.00 m (23.0 ft) | 5.12 m | 11.0 m | 5.93 m | 32% / 68% | 0.24% |
| 10.0 m (32.8 ft) | 6.56 m | 21.0 m | 14.4 m | 24% / 76% | 0.17% |
| 15.0 m (49.2 ft) | 8.40 m | 70.2 m | 61.8 m | 11% / 89% | 0.11% |
| 20.0 m (65.6 ft) | 9.76 m | ∞ | ∞ | — | 0.08% |
| 30.0 m (98.4 ft) | 11.7 m | ∞ | ∞ | — | 0.06% |
| 50.0 m (164 ft) | 13.8 m | ∞ | ∞ | — | 0.03% |
| 100 m (328 ft) | 16.0 m | ∞ | ∞ | — | 0.02% |
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/1.4#
Same lens settings on other formats#
When to use it#
At f/1.4, a 20 mm lens on Micro Four Thirds is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 96.2 cm of sharp zone; for maximum front-to-back sharpness focus at 19.1 m and everything from 9.53 m to infinity will be acceptably sharp.
See also the f/1.4 aperture guide.
Frequently asked questions#
What is the depth of field of a 20mm lens at f/1.4?
On Micro Four Thirds, focused at 3 m, it is 96.2 cm; at 1 m it is 10.3 cm.
What is the hyperfocal distance for 20mm f/1.4?
19.1 m (62.6 ft) on Micro Four Thirds. Everything from 9.53 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources