Depth of field for the Sigma 18-50mm F2.8 DC DN | Contemporary 021 on the Sigma fp (1.00× crop, circle of confusion 0.030 mm). At 18 mm and f/8 the hyperfocal distance is 1.4 m — focus there and everything from 0.7 m to infinity is sharp.
Focal length
18 mm
18 mm FF equiv.
Hyperfocal @ f/8
1.4 m
4 ft
NPF wide open
15.3 s
f/2.8, 5.93 µm pixels
Horizontal FOV
90.0°
Depth of field chart at 18 mm
| Focus distance | f/2.8 | f/4 | f/5.6 | f/8 | f/11 | f/16 |
|---|---|---|---|---|---|---|
| 1 m | 0.80–1.3 m | 0.73–1.6 m | 0.66–2.0 m | 0.58–3.7 m | 0.50–∞ m | 0.41–∞ m |
| 2 m | 1.32–4.1 m | 1.15–7.5 m | 0.99–∞ m | 0.81–∞ m | 0.66–∞ m | 0.51–∞ m |
| 3 m | 1.69–13.2 m | 1.43–∞ m | 1.18–∞ m | 0.93–∞ m | 0.74–∞ m | 0.55–∞ m |
| 5 m | 2.18–∞ m | 1.76–∞ m | 1.40–∞ m | 1.07–∞ m | 0.82–∞ m | 0.60–∞ m |
| 10 m | 2.79–∞ m | 2.13–∞ m | 1.62–∞ m | 1.19–∞ m | 0.90–∞ m | 0.63–∞ m |
| 20 m | 3.24–∞ m | 2.38–∞ m | 1.76–∞ m | 1.27–∞ m | 0.94–∞ m | 0.65–∞ m |
Each cell shows the near and far limits of acceptable sharpness.
Open the DoF calculator with this setup