Front-to-back sharpness for a 28 mm lens on APS-C (Canon): 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: 28 mm on APS-C (Canon)
| Aperture | Hyperfocal (m) | Hyperfocal (ft) | Sharp from (m) | Sharp from (ft) |
|---|---|---|---|---|
| f/1.4 | 29.50 m | 96.8 ft | 14.75 m | 48.4 ft |
| f/1.8 | 22.95 m | 75.3 ft | 11.48 m | 37.7 ft |
| f/2 | 20.66 m | 67.8 ft | 10.33 m | 33.9 ft |
| f/2.8 | 14.76 m | 48.4 ft | 7.38 m | 24.2 ft |
| f/4 | 10.34 m | 33.9 ft | 5.17 m | 17.0 ft |
| f/5.6 | 7.40 m | 24.3 ft | 3.70 m | 12.1 ft |
| f/8 | 5.19 m | 17.0 ft | 2.59 m | 8.5 ft |
| f/11 | 3.78 m | 12.4 ft | 1.89 m | 6.2 ft |
| f/16 | 2.61 m | 8.6 ft | 1.30 m | 4.3 ft |
| f/22 | 1.90 m | 6.2 ft | 0.95 m | 3.1 ft |
Circle of confusion 0.019 mm. A 28 mm lens on this sensor frames like 45 mm on full frame.
Other focal lengths
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