4.89 m
Hyperfocal distance
2.44 m
Sharp from (focused at hyperfocal)
40 mm f/11.0
Full-frame equivalent
57°
Diagonal angle of view
Depth of field by subject distance#
40 mm at f/11 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) | 28.5 cm | 31.7 cm | 3.2 cm | 47% / 53% | 1.55% |
| 50.0 cm (1.64 ft) | 45.7 cm | 55.2 cm | 9.6 cm | 45% / 55% | 0.88% |
| 75.0 cm (2.46 ft) | 65.4 cm | 87.9 cm | 22.4 cm | 43% / 57% | 0.57% |
| 1.00 m (3.28 ft) | 83.5 cm | 1.25 m | 41.2 cm | 40% / 60% | 0.42% |
| 1.50 m (4.92 ft) | 1.15 m | 2.15 m | 99.3 cm | 35% / 65% | 0.28% |
| 2.00 m (6.56 ft) | 1.42 m | 3.36 m | 1.93 m | 30% / 70% | 0.21% |
| 3.00 m (9.84 ft) | 1.86 m | 7.70 m | 5.84 m | 19% / 81% | 0.14% |
| 4.00 m (13.1 ft) | 2.20 m | 21.8 m | 19.6 m | 9% / 91% | 0.10% |
| 5.00 m (16.4 ft) | 2.47 m | ∞ | ∞ | — | 0.08% |
| 7.00 m (23.0 ft) | 2.87 m | ∞ | ∞ | — | 0.06% |
| 10.0 m (32.8 ft) | 3.27 m | ∞ | ∞ | — | 0.04% |
| 15.0 m (49.2 ft) | 3.67 m | ∞ | ∞ | — | 0.03% |
| 20.0 m (65.6 ft) | 3.91 m | ∞ | ∞ | — | 0.02% |
| 30.0 m (98.4 ft) | 4.18 m | ∞ | ∞ | — | 0.01% |
| 50.0 m (164 ft) | 4.42 m | ∞ | ∞ | — | 0.01% |
| 100 m (328 ft) | 4.63 m | ∞ | ∞ | — | 0.00% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
40 mm at other apertures (subject at 3 m)#
Other focal lengths at f/11#
Same lens settings on other formats#
When to use it#
At f/11, a 40 mm lens on full frame is a natural choice for landscapes and architecture where front-to-back sharpness matters. Focused at 3 m you get 5.84 m of sharp zone; for maximum front-to-back sharpness focus at 4.89 m and everything from 2.44 m to infinity will be acceptably sharp.
See also the f/11 aperture guide.
Frequently asked questions#
What is the depth of field of a 40mm lens at f/11?
On full frame, focused at 3 m, it is 5.84 m; at 1 m it is 41.2 cm.
What is the hyperfocal distance for 40mm f/11?
4.89 m (16.0 ft) on full frame. Everything from 2.44 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources