Front-to-back sharpness for a 20 mm lens on 1-inch type: 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 1-inch type
| Aperture | Hyperfocal (m) | Hyperfocal (ft) | Sharp from (m) | Sharp from (ft) |
|---|---|---|---|---|
| f/1.4 | 25.99 m | 85.3 ft | 13.00 m | 42.6 ft |
| f/1.8 | 20.22 m | 66.3 ft | 10.11 m | 33.2 ft |
| f/2 | 18.20 m | 59.7 ft | 9.10 m | 29.9 ft |
| f/2.8 | 13.01 m | 42.7 ft | 6.50 m | 21.3 ft |
| f/4 | 9.11 m | 29.9 ft | 4.56 m | 14.9 ft |
| f/5.6 | 6.51 m | 21.4 ft | 3.26 m | 10.7 ft |
| f/8 | 4.57 m | 15.0 ft | 2.28 m | 7.5 ft |
| f/11 | 3.33 m | 10.9 ft | 1.66 m | 5.5 ft |
| f/16 | 2.29 m | 7.5 ft | 1.15 m | 3.8 ft |
| f/22 | 1.67 m | 5.5 ft | 0.84 m | 2.7 ft |
Circle of confusion 0.011 mm. A 20 mm lens on this sensor frames like 54 mm on full frame.
Other focal lengths
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