Depth of field by subject distance#
85 mm at f/1.4 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) | 30.0 cm | 30.0 cm | 0.0 cm | 50% / 50% | 102.14% |
| 50.0 cm (1.64 ft) | 49.9 cm | 50.1 cm | 0.2 cm | 50% / 50% | 52.92% |
| 75.0 cm (2.46 ft) | 74.8 cm | 75.2 cm | 0.4 cm | 50% / 50% | 33.02% |
| 1.00 m (3.28 ft) | 99.6 cm | 1.00 m | 0.7 cm | 50% / 50% | 24.00% |
| 1.50 m (4.92 ft) | 1.49 m | 1.51 m | 1.6 cm | 50% / 50% | 15.52% |
| 2.00 m (6.56 ft) | 1.99 m | 2.01 m | 3.0 cm | 50% / 50% | 11.47% |
| 3.00 m (9.84 ft) | 2.97 m | 3.03 m | 6.8 cm | 49% / 51% | 7.53% |
| 4.00 m (13.1 ft) | 3.94 m | 4.06 m | 12.1 cm | 49% / 51% | 5.61% |
| 5.00 m (16.4 ft) | 4.91 m | 5.10 m | 19.1 cm | 49% / 51% | 4.47% |
| 7.00 m (23.0 ft) | 6.82 m | 7.19 m | 37.5 cm | 49% / 51% | 3.18% |
| 10.0 m (32.8 ft) | 9.63 m | 10.4 m | 77.0 cm | 48% / 52% | 2.21% |
| 15.0 m (49.2 ft) | 14.2 m | 15.9 m | 1.74 m | 47% / 53% | 1.47% |
| 20.0 m (65.6 ft) | 18.6 m | 21.7 m | 3.11 m | 46% / 54% | 1.10% |
| 30.0 m (98.4 ft) | 26.9 m | 33.9 m | 7.05 m | 44% / 56% | 0.73% |
| 50.0 m (164 ft) | 41.9 m | 62.0 m | 20.1 m | 40% / 60% | 0.44% |
| 100 m (328 ft) | 72.1 m | 163 m | 91.1 m | 31% / 69% | 0.22% |
Try other settings#
85 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 85 mm lens on APS-C is a natural choice for portraits and subject isolation. Focused at 3 m you get 6.8 cm of sharp zone; for maximum front-to-back sharpness focus at 258 m and everything from 129 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 85mm lens at f/1.4?
On APS-C, focused at 3 m, it is 6.8 cm; at 1 m it is 0.7 cm.
What is the hyperfocal distance for 85mm f/1.4?
258 m (847 ft) on APS-C. Everything from 129 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources