Front-to-back sharpness for a 20 mm lens on Full frame (35 mm): focus at the hyperfocal distance and everything from half that distance to infinity is acceptably sharp.
The chart lists every aperture in meters and feet; the calculator above it is preset to these values so you can try other settings.
Hyperfocal distance chart: 20 mm on Full frame (35 mm)
| Aperture | Hyperfocal (m) | Hyperfocal (ft) | Sharp from (m) | Sharp from (ft) |
|---|---|---|---|---|
| f/1.4 | 9.54 m | 31.3 ft | 4.77 m | 15.7 ft |
| f/1.8 | 7.43 m | 24.4 ft | 3.71 m | 12.2 ft |
| f/2 | 6.69 m | 21.9 ft | 3.34 m | 11.0 ft |
| f/2.8 | 4.78 m | 15.7 ft | 2.39 m | 7.8 ft |
| f/4 | 3.35 m | 11.0 ft | 1.68 m | 5.5 ft |
| f/5.6 | 2.40 m | 7.9 ft | 1.20 m | 3.9 ft |
| f/8 | 1.69 m | 5.5 ft | 0.84 m | 2.8 ft |
| f/11 | 1.23 m | 4.0 ft | 0.62 m | 2.0 ft |
| f/16 | 0.85 m | 2.8 ft | 0.43 m | 1.4 ft |
| f/22 | 0.63 m | 2.1 ft | 0.31 m | 1.0 ft |
Circle of confusion 0.03 mm. A 20 mm lens on this sensor frames like 20 mm on full frame.
Other focal lengths
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