485 m
Hyperfocal distance
243 m
Sharp from (focused at hyperfocal)
400 mm f/11.0
Full-frame equivalent
6°
Diagonal angle of view
Depth of field by subject distance#
400 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 |
|---|---|---|---|---|---|
| 1.00 m (3.28 ft) | 99.9 cm | 1.00 m | 0.2 cm | 50% / 50% | 67.34% |
| 1.50 m (4.92 ft) | 1.50 m | 1.50 m | 0.7 cm | 50% / 50% | 36.73% |
| 2.00 m (6.56 ft) | 1.99 m | 2.01 m | 1.3 cm | 50% / 50% | 25.25% |
| 3.00 m (9.84 ft) | 2.98 m | 3.02 m | 3.2 cm | 50% / 50% | 15.54% |
| 4.00 m (13.1 ft) | 3.97 m | 4.03 m | 5.9 cm | 50% / 50% | 11.22% |
| 5.00 m (16.4 ft) | 4.95 m | 5.05 m | 9.5 cm | 50% / 50% | 8.78% |
| 7.00 m (23.0 ft) | 6.91 m | 7.10 m | 19.1 cm | 49% / 51% | 6.12% |
| 10.0 m (32.8 ft) | 9.81 m | 10.2 m | 39.6 cm | 49% / 51% | 4.21% |
| 15.0 m (49.2 ft) | 14.6 m | 15.5 m | 90.4 cm | 48% / 52% | 2.77% |
| 20.0 m (65.6 ft) | 19.2 m | 20.8 m | 1.62 m | 48% / 52% | 2.06% |
| 30.0 m (98.4 ft) | 28.3 m | 32.0 m | 3.68 m | 47% / 53% | 1.37% |
| 50.0 m (164 ft) | 45.4 m | 55.7 m | 10.3 m | 45% / 55% | 0.81% |
| 100 m (328 ft) | 83.0 m | 126 m | 42.9 m | 40% / 60% | 0.41% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
400 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 400 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 3.2 cm of sharp zone; for maximum front-to-back sharpness focus at 485 m and everything from 243 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 400mm lens at f/11?
On full frame, focused at 3 m, it is 3.2 cm; at 1 m it is 0.2 cm.
What is the hyperfocal distance for 400mm f/11?
485 m (1592 ft) on full frame. Everything from 243 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources