18.7 m
Hyperfocal distance
9.35 m
Sharp from (focused at hyperfocal)
28 mm f/1.4
Full-frame equivalent
75°
Diagonal angle of view
Depth of field by subject distance#
28 mm at f/1.4 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) | 29.6 cm | 30.4 cm | 0.9 cm | 49% / 51% | 5.72% |
| 50.0 cm (1.64 ft) | 48.8 cm | 51.3 cm | 2.5 cm | 49% / 51% | 3.30% |
| 75.0 cm (2.46 ft) | 72.2 cm | 78.0 cm | 5.8 cm | 48% / 52% | 2.15% |
| 1.00 m (3.28 ft) | 95.1 cm | 1.05 m | 10.4 cm | 47% / 53% | 1.60% |
| 1.50 m (4.92 ft) | 1.39 m | 1.63 m | 23.8 cm | 46% / 54% | 1.06% |
| 2.00 m (6.56 ft) | 1.81 m | 2.24 m | 42.7 cm | 45% / 55% | 0.79% |
| 3.00 m (9.84 ft) | 2.59 m | 3.57 m | 98.0 cm | 42% / 58% | 0.52% |
| 4.00 m (13.1 ft) | 3.30 m | 5.08 m | 1.78 m | 39% / 61% | 0.39% |
| 5.00 m (16.4 ft) | 3.95 m | 6.82 m | 2.87 m | 37% / 63% | 0.31% |
| 7.00 m (23.0 ft) | 5.10 m | 11.2 m | 6.08 m | 31% / 69% | 0.22% |
| 10.0 m (32.8 ft) | 6.52 m | 21.5 m | 15.0 m | 23% / 77% | 0.16% |
| 15.0 m (49.2 ft) | 8.32 m | 75.8 m | 67.5 m | 10% / 90% | 0.10% |
| 20.0 m (65.6 ft) | 9.66 m | ∞ | ∞ | — | 0.08% |
| 30.0 m (98.4 ft) | 11.5 m | ∞ | ∞ | — | 0.05% |
| 50.0 m (164 ft) | 13.6 m | ∞ | ∞ | — | 0.03% |
| 100 m (328 ft) | 15.7 m | ∞ | ∞ | — | 0.02% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
28 mm at other apertures (subject at 3 m)#
Other focal lengths at f/1.4#
Same lens settings on other formats#
When to use it#
At f/1.4, a 28 mm lens on full frame is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 98.0 cm of sharp zone; for maximum front-to-back sharpness focus at 18.7 m and everything from 9.35 m to infinity will be acceptably sharp.
See also the f/1.4 aperture guide.
Frequently asked questions#
What is the depth of field of a 28mm lens at f/1.4?
On full frame, focused at 3 m, it is 98.0 cm; at 1 m it is 10.4 cm.
What is the hyperfocal distance for 28mm f/1.4?
18.7 m (61.3 ft) on full frame. Everything from 9.35 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources