Front-to-back sharpness for a 28 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: 28 mm on 1-inch type
| Aperture | Hyperfocal (m) | Hyperfocal (ft) | Sharp from (m) | Sharp from (ft) |
|---|---|---|---|---|
| f/1.4 | 50.94 m | 167.1 ft | 25.47 m | 83.6 ft |
| f/1.8 | 39.62 m | 130.0 ft | 19.81 m | 65.0 ft |
| f/2 | 35.66 m | 117.0 ft | 17.83 m | 58.5 ft |
| f/2.8 | 25.48 m | 83.6 ft | 12.74 m | 41.8 ft |
| f/4 | 17.85 m | 58.6 ft | 8.92 m | 29.3 ft |
| f/5.6 | 12.76 m | 41.8 ft | 6.38 m | 20.9 ft |
| f/8 | 8.94 m | 29.3 ft | 4.47 m | 14.7 ft |
| f/11 | 6.51 m | 21.3 ft | 3.25 m | 10.7 ft |
| f/16 | 4.48 m | 14.7 ft | 2.24 m | 7.4 ft |
| f/22 | 3.27 m | 10.7 ft | 1.63 m | 5.4 ft |
Circle of confusion 0.011 mm. A 28 mm lens on this sensor frames like 76 mm on full frame.
Other focal lengths
Related tools
Depth of Field CalculatorHyperfocal Distance CalculatorCrop Factor CalculatorField of View CalculatorFocus Stacking CalculatorDiffraction Limit CalculatorFlash Guide Number CalculatorTeleconverter CalculatorExtension Tube Magnification CalculatorMacro Effective Aperture & DoF CalculatorFocal Length From Field of ViewSubject Size in Frame Calculator
Embed this tool on your site
Free to embed on blogs, club websites and forums — copy the code below. A small credit link is included.