Depth of field by subject distance#
14 mm at f/2.8 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) | 26.7 cm | 34.2 cm | 7.5 cm | 44% / 56% | 0.68% |
| 50.0 cm (1.64 ft) | 41.4 cm | 63.2 cm | 21.8 cm | 40% / 60% | 0.40% |
| 75.0 cm (2.46 ft) | 57.0 cm | 1.10 m | 52.5 cm | 34% / 66% | 0.26% |
| 1.00 m (3.28 ft) | 70.3 cm | 1.73 m | 1.03 m | 29% / 71% | 0.20% |
| 1.50 m (4.92 ft) | 91.6 cm | 4.13 m | 3.21 m | 18% / 82% | 0.13% |
| 2.00 m (6.56 ft) | 1.08 m | 13.4 m | 12.4 m | 7% / 93% | 0.10% |
| 3.00 m (9.84 ft) | 1.32 m | ∞ | ∞ | — | 0.07% |
| 4.00 m (13.1 ft) | 1.48 m | ∞ | ∞ | — | 0.05% |
| 5.00 m (16.4 ft) | 1.59 m | ∞ | ∞ | — | 0.04% |
| 7.00 m (23.0 ft) | 1.75 m | ∞ | ∞ | — | 0.03% |
| 10.0 m (32.8 ft) | 1.89 m | ∞ | ∞ | — | 0.02% |
| 15.0 m (49.2 ft) | 2.02 m | ∞ | ∞ | — | 0.01% |
| 20.0 m (65.6 ft) | 2.09 m | ∞ | ∞ | — | 0.01% |
| 30.0 m (98.4 ft) | 2.17 m | ∞ | ∞ | — | 0.01% |
| 50.0 m (164 ft) | 2.23 m | ∞ | ∞ | — | 0.00% |
| 100 m (328 ft) | 2.28 m | ∞ | ∞ | — | 0.00% |
Try other settings#
14 mm at other apertures (subject at 3 m)#
Other focal lengths at f/2.8#
Same lens settings on other formats#
When to use it#
At f/2.8, a 14 mm lens on full frame is a natural choice for environmental portraits, street and low light. Focused at 3 m you get everything to infinity; for maximum front-to-back sharpness focus at 2.35 m and everything from 1.17 m to infinity will be acceptably sharp.
See also the f/2.8 aperture guide.
Frequently asked questions#
What is the depth of field of a 14mm lens at f/2.8?
On full frame, focused at 3 m, it is infinite (beyond the hyperfocal distance); at 1 m it is 1.03 m.
What is the hyperfocal distance for 14mm f/2.8?
2.35 m (7.70 ft) on full frame. Everything from 1.17 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources