Key numbers
- Mount / system: Canon RF-S (APS-C)
- Sensor: APS-C, 23.5 × 15.6mm
- Focal length: 18–45mm (about 43mm full-frame equivalent, 1.53× crop)
- Aperture: f/4.5–6.3 to f/22
- DoF at 3 m, 28mm, f/5.2: 2.19–4.76 m (≈ 257 cm deep)
- Hyperfocal distance (28mm, f/8): 5.24 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.
18 mm
| Aperture | Hyperfocal | 1 m | 2 m | 3 m | 5 m | 10 m |
|---|---|---|---|---|---|---|
| f/4.5 | 3.85 m | 0.80–1.34 | 1.32–4.13 | 1.69–13.3 | 2.18–∞ | 2.78–∞ |
| f/5.6 | 3.09 m | 0.76–1.46 | 1.22–5.56 | 1.53–82.3 | 1.92–∞ | 2.37–∞ |
| f/8 | 2.17 m | 0.69–1.83 | 1.05–22.9 | 1.26–∞ | 1.52–∞ | 1.79–∞ |
| f/11 | 1.58 m | 0.62–2.63 | 0.89–∞ | 1.04–∞ | 1.21–∞ | 1.37–∞ |
| f/16 | 1.09 m | 0.53–9.70 | 0.71–∞ | 0.81–∞ | 0.90–∞ | 0.99–∞ |
| f/22 | 0.80 m | 0.45–∞ | 0.58–∞ | 0.64–∞ | 0.69–∞ | 0.74–∞ |
28 mm
| Aperture | Hyperfocal | 1 m | 2 m | 3 m | 5 m | 10 m |
|---|---|---|---|---|---|---|
| f/5.2 | 8.05 m | 0.89–1.14 | 1.61–2.65 | 2.19–4.76 | 3.09–13.1 | 4.47–∞ |
| f/5.6 | 7.47 m | 0.88–1.15 | 1.58–2.72 | 2.15–4.98 | 3.00–14.9 | 4.28–∞ |
| f/8 | 5.24 m | 0.84–1.23 | 1.45–3.21 | 1.91–6.93 | 2.57–97.9 | 3.44–∞ |
| f/11 | 3.82 m | 0.80–1.34 | 1.32–4.14 | 1.69–13.5 | 2.17–∞ | 2.77–∞ |
| f/16 | 2.63 m | 0.73–1.58 | 1.14–7.96 | 1.41–∞ | 1.73–∞ | 2.09–∞ |
| f/22 | 1.92 m | 0.66–2.02 | 0.99–∞ | 1.18–∞ | 1.39–∞ | 1.62–∞ |
45 mm
| Aperture | Hyperfocal | 1 m | 2 m | 3 m | 5 m | 10 m |
|---|---|---|---|---|---|---|
| f/6.3 | 17.1 m | 0.95–1.06 | 1.80–2.26 | 2.56–3.63 | 3.88–7.03 | 6.33–23.9 |
| f/8 | 13.5 m | 0.93–1.08 | 1.75–2.34 | 2.46–3.84 | 3.66–7.90 | 5.76–38.0 |
| f/11 | 9.83 m | 0.91–1.11 | 1.67–2.50 | 2.31–4.29 | 3.32–10.1 | 4.97–∞ |
| f/16 | 6.78 m | 0.88–1.16 | 1.55–2.81 | 2.09–5.32 | 2.89–18.6 | 4.05–∞ |
| f/22 | 4.94 m | 0.84–1.24 | 1.43–3.31 | 1.88–7.47 | 2.50–∞ | 3.32–∞ |
FAQ
What is the depth of field of the Canon RF-S 18-45mm F4.5-6.3 IS STM at f/5.2 and 3 m?
At 28mm, f/5.2 and focus at 3 m, acceptable sharpness runs from 2.19 to 4.76 m — about 257 cm in total.
What is the hyperfocal distance of the Canon RF-S 18-45mm F4.5-6.3 IS STM?
At 28mm and f/8 on a APS-C sensor the hyperfocal distance is about 5.24 m. Focus there and everything from 2.62 m to infinity is sharp.
How do I get more background blur with the Canon RF-S 18-45mm F4.5-6.3 IS STM?
Open the aperture to f/5.2, move closer to your subject and increase the distance between subject and background, and zoom in to the long end. You can check the result in the calculator above.