7.22 m
Hyperfocal distance
3.61 m
Sharp from (focused at hyperfocal)
37 mm f/6.1
Full-frame equivalent
61°
Diagonal angle of view
Depth of field by subject distance#
24 mm at f/4 on APS-C (23.5×15.6 mm), circle of confusion 20 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) | 28.9 cm | 31.2 cm | 2.3 cm | 48% / 52% | 2.22% |
| 50.0 cm (1.64 ft) | 46.9 cm | 53.5 cm | 6.6 cm | 47% / 53% | 1.29% |
| 75.0 cm (2.46 ft) | 68.1 cm | 83.4 cm | 15.3 cm | 45% / 55% | 0.84% |
| 1.00 m (3.28 ft) | 88.1 cm | 1.16 m | 27.6 cm | 43% / 57% | 0.63% |
| 1.50 m (4.92 ft) | 1.24 m | 1.89 m | 64.2 cm | 40% / 60% | 0.42% |
| 2.00 m (6.56 ft) | 1.57 m | 2.76 m | 1.19 m | 36% / 64% | 0.31% |
| 3.00 m (9.84 ft) | 2.12 m | 5.11 m | 2.99 m | 29% / 71% | 0.21% |
| 4.00 m (13.1 ft) | 2.58 m | 8.93 m | 6.36 m | 22% / 78% | 0.15% |
| 5.00 m (16.4 ft) | 2.96 m | 16.2 m | 13.2 m | 15% / 85% | 0.12% |
| 7.00 m (23.0 ft) | 3.56 m | 225 m | 221 m | 2% / 98% | 0.09% |
| 10.0 m (32.8 ft) | 4.19 m | ∞ | ∞ | — | 0.06% |
| 15.0 m (49.2 ft) | 4.87 m | ∞ | ∞ | — | 0.04% |
| 20.0 m (65.6 ft) | 5.30 m | ∞ | ∞ | — | 0.03% |
| 30.0 m (98.4 ft) | 5.81 m | ∞ | ∞ | — | 0.02% |
| 50.0 m (164 ft) | 6.30 m | ∞ | ∞ | — | 0.01% |
| 100 m (328 ft) | 6.72 m | ∞ | ∞ | — | 0.01% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
24 mm at other apertures (subject at 3 m)#
Other focal lengths at f/4#
| Focal length | Subject at | Total DoF |
|---|---|---|
| 14 mm | 3.00 m | ∞ |
| 16 mm | 3.00 m | 42.9 m |
| 20 mm | 3.00 m | 5.55 m |
| 24 mm | 3.00 m | 2.99 m |
| 28 mm | 3.00 m | 2.00 m |
| 35 mm | 3.00 m | 1.21 m |
| 40 mm | 3.00 m | 90.8 cm |
| 50 mm | 3.00 m | 57.1 cm |
| 85 mm | 3.00 m | 19.4 cm |
| 105 mm | 3.00 m | 12.6 cm |
| 135 mm | 3.00 m | 7.5 cm |
| 200 mm | 10.0 m | 39.2 cm |
| 300 mm | 10.0 m | 17.2 cm |
| 400 mm | 10.0 m | 9.6 cm |
| 600 mm | 10.0 m | 4.2 cm |
Same lens settings on other formats#
When to use it#
At f/4, a 24 mm lens on APS-C is a natural choice for general photography. Focused at 3 m you get 2.99 m of sharp zone; for maximum front-to-back sharpness focus at 7.22 m and everything from 3.61 m to infinity will be acceptably sharp.
See also the f/4 aperture guide.
Frequently asked questions#
What is the depth of field of a 24mm lens at f/4?
On APS-C, focused at 3 m, it is 2.99 m; at 1 m it is 27.6 cm.
What is the hyperfocal distance for 24mm f/4?
7.22 m (23.7 ft) on APS-C. Everything from 3.61 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources