Depth of field by subject distance#
85 mm at f/2.8 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) | 29.9 cm | 30.1 cm | 0.1 cm | 50% / 50% | 33.34% |
| 50.0 cm (1.64 ft) | 49.8 cm | 50.2 cm | 0.5 cm | 50% / 50% | 17.27% |
| 75.0 cm (2.46 ft) | 74.4 cm | 75.6 cm | 1.2 cm | 50% / 50% | 10.78% |
| 1.00 m (3.28 ft) | 98.9 cm | 1.01 m | 2.1 cm | 49% / 51% | 7.83% |
| 1.50 m (4.92 ft) | 1.48 m | 1.53 m | 4.9 cm | 49% / 51% | 5.07% |
| 2.00 m (6.56 ft) | 1.96 m | 2.05 m | 8.9 cm | 49% / 51% | 3.74% |
| 3.00 m (9.84 ft) | 2.90 m | 3.11 m | 20.4 cm | 48% / 52% | 2.46% |
| 4.00 m (13.1 ft) | 3.83 m | 4.19 m | 36.5 cm | 48% / 52% | 1.83% |
| 5.00 m (16.4 ft) | 4.73 m | 5.30 m | 57.3 cm | 47% / 53% | 1.46% |
| 7.00 m (23.0 ft) | 6.48 m | 7.61 m | 1.13 m | 46% / 54% | 1.04% |
| 10.0 m (32.8 ft) | 8.97 m | 11.3 m | 2.34 m | 44% / 56% | 0.72% |
| 15.0 m (49.2 ft) | 12.8 m | 18.1 m | 5.36 m | 41% / 59% | 0.48% |
| 20.0 m (65.6 ft) | 16.2 m | 26.0 m | 9.79 m | 38% / 62% | 0.36% |
| 30.0 m (98.4 ft) | 22.3 m | 46.0 m | 23.7 m | 33% / 67% | 0.24% |
| 50.0 m (164 ft) | 31.6 m | 119 m | 87.5 m | 21% / 79% | 0.14% |
| 100 m (328 ft) | 46.3 m | ∞ | ∞ | — | 0.07% |
Try other settings#
85 mm at other apertures (subject at 3 m)#
Other focal lengths at f/2.8#
Same lens settings on other formats#
When to use it#
At f/2.8, a 85 mm lens on full frame is a natural choice for portraits and subject isolation. Focused at 3 m you get 20.4 cm of sharp zone; for maximum front-to-back sharpness focus at 86.1 m and everything from 43.0 m to infinity will be acceptably sharp.
See also the f/2.8 aperture guide.
Frequently asked questions#
What is the depth of field of a 85mm lens at f/2.8?
On full frame, focused at 3 m, it is 20.4 cm; at 1 m it is 2.1 cm.
What is the hyperfocal distance for 85mm f/2.8?
86.1 m (282 ft) on full frame. Everything from 43.0 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources