Front-to-back sharpness for a 28 mm lens on APS-C (Nikon, Sony, Fujifilm, Pentax): 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 (Nikon, Sony, Fujifilm, Pentax)
| Aperture | Hyperfocal (m) | Hyperfocal (ft) | Sharp from (m) | Sharp from (ft) |
|---|---|---|---|---|
| f/1.4 | 28.03 m | 92.0 ft | 14.01 m | 46.0 ft |
| f/1.8 | 21.81 m | 71.5 ft | 10.90 m | 35.8 ft |
| f/2 | 19.63 m | 64.4 ft | 9.81 m | 32.2 ft |
| f/2.8 | 14.03 m | 46.0 ft | 7.01 m | 23.0 ft |
| f/4 | 9.83 m | 32.2 ft | 4.91 m | 16.1 ft |
| f/5.6 | 7.03 m | 23.1 ft | 3.51 m | 11.5 ft |
| f/8 | 4.93 m | 16.2 ft | 2.46 m | 8.1 ft |
| f/11 | 3.59 m | 11.8 ft | 1.80 m | 5.9 ft |
| f/16 | 2.48 m | 8.1 ft | 1.24 m | 4.1 ft |
| f/22 | 1.81 m | 5.9 ft | 0.90 m | 3.0 ft |
Circle of confusion 0.02 mm. A 28 mm lens on this sensor frames like 43 mm on full frame.
Other focal lengths
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