Depth of field by subject distance#
24 mm at f/1.2 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) | 29.5 cm | 30.5 cm | 1.0 cm | 49% / 51% | 4.83% |
| 50.0 cm (1.64 ft) | 48.6 cm | 51.5 cm | 3.0 cm | 49% / 51% | 2.80% |
| 75.0 cm (2.46 ft) | 71.7 cm | 78.6 cm | 6.8 cm | 48% / 52% | 1.84% |
| 1.00 m (3.28 ft) | 94.3 cm | 1.06 m | 12.2 cm | 47% / 53% | 1.37% |
| 1.50 m (4.92 ft) | 1.37 m | 1.65 m | 27.9 cm | 45% / 55% | 0.90% |
| 2.00 m (6.56 ft) | 1.78 m | 2.28 m | 50.2 cm | 44% / 56% | 0.67% |
| 3.00 m (9.84 ft) | 2.53 m | 3.69 m | 1.16 m | 41% / 59% | 0.45% |
| 4.00 m (13.1 ft) | 3.20 m | 5.32 m | 2.12 m | 38% / 62% | 0.34% |
| 5.00 m (16.4 ft) | 3.81 m | 7.26 m | 3.44 m | 34% / 66% | 0.27% |
| 7.00 m (23.0 ft) | 4.87 m | 12.4 m | 7.54 m | 28% / 72% | 0.19% |
| 10.0 m (32.8 ft) | 6.16 m | 26.6 m | 20.4 m | 19% / 81% | 0.13% |
| 15.0 m (49.2 ft) | 7.75 m | 234 m | 227 m | 3% / 97% | 0.09% |
| 20.0 m (65.6 ft) | 8.89 m | ∞ | ∞ | — | 0.07% |
| 30.0 m (98.4 ft) | 10.4 m | ∞ | ∞ | — | 0.04% |
| 50.0 m (164 ft) | 12.1 m | ∞ | ∞ | — | 0.03% |
| 100 m (328 ft) | 13.8 m | ∞ | ∞ | — | 0.01% |
Try other settings#
24 mm at other apertures (subject at 3 m)#
Other focal lengths at f/1.2#
Same lens settings on other formats#
When to use it#
At f/1.2, a 24 mm lens on full frame is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 1.16 m of sharp zone; for maximum front-to-back sharpness focus at 16.0 m and everything from 8.01 m to infinity will be acceptably sharp.
See also the f/1.2 aperture guide.
Frequently asked questions#
What is the depth of field of a 24mm lens at f/1.2?
On full frame, focused at 3 m, it is 1.16 m; at 1 m it is 12.2 cm.
What is the hyperfocal distance for 24mm f/1.2?
16.0 m (52.6 ft) on full frame. Everything from 8.01 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources