19.6 m
Hyperfocal distance
9.81 m
Sharp from (focused at hyperfocal)
43 mm f/3.1
Full-frame equivalent
53°
Diagonal angle of view
Depth of field by subject distance#
28 mm at f/2 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) | 29.6 cm | 30.4 cm | 0.8 cm | 49% / 51% | 6.13% |
| 50.0 cm (1.64 ft) | 48.8 cm | 51.2 cm | 2.4 cm | 49% / 51% | 3.53% |
| 75.0 cm (2.46 ft) | 72.3 cm | 77.9 cm | 5.5 cm | 48% / 52% | 2.31% |
| 1.00 m (3.28 ft) | 95.3 cm | 1.05 m | 9.9 cm | 48% / 52% | 1.72% |
| 1.50 m (4.92 ft) | 1.40 m | 1.62 m | 22.7 cm | 46% / 54% | 1.13% |
| 2.00 m (6.56 ft) | 1.82 m | 2.22 m | 40.7 cm | 45% / 55% | 0.85% |
| 3.00 m (9.84 ft) | 2.60 m | 3.54 m | 93.1 cm | 42% / 58% | 0.56% |
| 4.00 m (13.1 ft) | 3.33 m | 5.02 m | 1.69 m | 40% / 60% | 0.42% |
| 5.00 m (16.4 ft) | 3.99 m | 6.70 m | 2.71 m | 37% / 63% | 0.34% |
| 7.00 m (23.0 ft) | 5.16 m | 10.9 m | 5.70 m | 32% / 68% | 0.24% |
| 10.0 m (32.8 ft) | 6.63 m | 20.4 m | 13.7 m | 25% / 75% | 0.17% |
| 15.0 m (49.2 ft) | 8.50 m | 63.5 m | 55.0 m | 12% / 88% | 0.11% |
| 20.0 m (65.6 ft) | 9.91 m | ∞ | ∞ | — | 0.08% |
| 30.0 m (98.4 ft) | 11.9 m | ∞ | ∞ | — | 0.06% |
| 50.0 m (164 ft) | 14.1 m | ∞ | ∞ | — | 0.03% |
| 100 m (328 ft) | 16.4 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/2#
Same lens settings on other formats#
When to use it#
At f/2, a 28 mm lens on APS-C is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 93.1 cm of sharp zone; for maximum front-to-back sharpness focus at 19.6 m and everything from 9.81 m to infinity will be acceptably sharp.
See also the f/2 aperture guide.
Frequently asked questions#
What is the depth of field of a 28mm lens at f/2?
On APS-C, focused at 3 m, it is 93.1 cm; at 1 m it is 9.9 cm.
What is the hyperfocal distance for 28mm f/2?
19.6 m (64.4 ft) on APS-C. Everything from 9.81 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources