Depth of field by subject distance#
14 mm at f/1.8 on full frame (36×24 mm), circle of confusion 30 µm. “Background blur” is the size of an out-of-focus light at infinity as a percentage of frame width.
| Focus distance | Near limit | Far limit | Total DoF | Front / behind | Background blur |
|---|---|---|---|---|---|
| 30.0 cm (0.98 ft) | 27.8 cm | 32.6 cm | 4.8 cm | 46% / 54% | 1.06% |
| 50.0 cm (1.64 ft) | 44.1 cm | 57.7 cm | 13.6 cm | 43% / 57% | 0.62% |
| 75.0 cm (2.46 ft) | 62.4 cm | 94.1 cm | 31.7 cm | 40% / 60% | 0.41% |
| 1.00 m (3.28 ft) | 78.6 cm | 1.37 m | 58.7 cm | 36% / 64% | 0.31% |
| 1.50 m (4.92 ft) | 1.06 m | 2.54 m | 1.48 m | 30% / 70% | 0.20% |
| 2.00 m (6.56 ft) | 1.29 m | 4.42 m | 3.12 m | 23% / 77% | 0.15% |
| 3.00 m (9.84 ft) | 1.65 m | 16.9 m | 15.3 m | 9% / 91% | 0.10% |
| 4.00 m (13.1 ft) | 1.91 m | ∞ | ∞ | — | 0.08% |
| 5.00 m (16.4 ft) | 2.11 m | ∞ | ∞ | — | 0.06% |
| 7.00 m (23.0 ft) | 2.39 m | ∞ | ∞ | — | 0.04% |
| 10.0 m (32.8 ft) | 2.67 m | ∞ | ∞ | — | 0.03% |
| 15.0 m (49.2 ft) | 2.92 m | ∞ | ∞ | — | 0.02% |
| 20.0 m (65.6 ft) | 3.07 m | ∞ | ∞ | — | 0.02% |
| 30.0 m (98.4 ft) | 3.24 m | ∞ | ∞ | — | 0.01% |
| 50.0 m (164 ft) | 3.38 m | ∞ | ∞ | — | 0.01% |
| 100 m (328 ft) | 3.50 m | ∞ | ∞ | — | 0.00% |
Try other settings#
14 mm at other apertures (subject at 3 m)#
Other focal lengths at f/1.8#
Same lens settings on other formats#
When to use it#
At f/1.8, a 14 mm lens on full frame is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 15.3 m of sharp zone; for maximum front-to-back sharpness focus at 3.64 m and everything from 1.82 m to infinity will be acceptably sharp.
See also the f/1.8 aperture guide.
Frequently asked questions#
What is the depth of field of a 14mm lens at f/1.8?
On full frame, focused at 3 m, it is 15.3 m; at 1 m it is 58.7 cm.
What is the hyperfocal distance for 14mm f/1.8?
3.64 m (12.0 ft) on full frame. Everything from 1.82 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources