Key numbers
- Mount / system: Canon EF-S (APS-C DSLR)
- Sensor: APS-C, 23.5 × 15.6mm
- Focal length: 24mm (about 37mm full-frame equivalent, 1.53× crop)
- Aperture: f/2.8 to f/22
- DoF at 3 m, 24mm, f/2.8: 2.36–4.12 m (≈ 176 cm deep)
- Hyperfocal distance (24mm, f/8): 3.85 m
Depth of field table
Distances are measured from the sensor plane. Each cell shows the near and far limit of acceptable sharpness in metres (∞ = to infinity). Circle of confusion = sensor diagonal / 1500.
| Aperture | Hyperfocal | 1 m | 2 m | 3 m | 5 m | 10 m |
|---|---|---|---|---|---|---|
| f/2.8 | 11.0 m | 0.92–1.10 | 1.69–2.44 | 2.36–4.12 | 3.44–9.16 | 5.24–111 |
| f/4 | 7.68 m | 0.89–1.15 | 1.59–2.69 | 2.16–4.90 | 3.03–14.2 | 4.35–∞ |
| f/5.6 | 5.49 m | 0.85–1.22 | 1.47–3.12 | 1.95–6.55 | 2.62–53.0 | 3.55–∞ |
| f/8 | 3.85 m | 0.80–1.34 | 1.32–4.11 | 1.69–13.2 | 2.18–∞ | 2.79–∞ |
| f/11 | 2.81 m | 0.74–1.53 | 1.17–6.75 | 1.46–∞ | 1.80–∞ | 2.20–∞ |
| f/16 | 1.94 m | 0.67–2.01 | 0.99–∞ | 1.18–∞ | 1.40–∞ | 1.63–∞ |
| f/22 | 1.42 m | 0.59–3.22 | 0.84–∞ | 0.97–∞ | 1.11–∞ | 1.24–∞ |
FAQ
What is the depth of field of the Canon EF-S 24mm F2.8 STM at f/2.8 and 3 m?
At 24mm, f/2.8 and focus at 3 m, acceptable sharpness runs from 2.36 to 4.12 m — about 176 cm in total.
What is the hyperfocal distance of the Canon EF-S 24mm F2.8 STM?
At 24mm and f/8 on a APS-C sensor the hyperfocal distance is about 3.85 m. Focus there and everything from 1.93 m to infinity is sharp.
How do I get more background blur with the Canon EF-S 24mm F2.8 STM?
Open the aperture to f/2.8, move closer to your subject and increase the distance between subject and background. You can check the result in the calculator above.