90.4 m
Hyperfocal distance
45.2 m
Sharp from (focused at hyperfocal)
130 mm f/6.1
Full-frame equivalent
19°
Diagonal angle of view
Depth of field by subject distance#
85 mm at f/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) | 29.9 cm | 30.1 cm | 0.1 cm | 50% / 50% | 35.75% |
| 50.0 cm (1.64 ft) | 49.8 cm | 50.2 cm | 0.5 cm | 50% / 50% | 18.52% |
| 75.0 cm (2.46 ft) | 74.5 cm | 75.6 cm | 1.1 cm | 50% / 50% | 11.56% |
| 1.00 m (3.28 ft) | 99.0 cm | 1.01 m | 2.0 cm | 49% / 51% | 8.40% |
| 1.50 m (4.92 ft) | 1.48 m | 1.52 m | 4.7 cm | 49% / 51% | 5.43% |
| 2.00 m (6.56 ft) | 1.96 m | 2.04 m | 8.5 cm | 49% / 51% | 4.01% |
| 3.00 m (9.84 ft) | 2.91 m | 3.10 m | 19.4 cm | 48% / 52% | 2.64% |
| 4.00 m (13.1 ft) | 3.83 m | 4.18 m | 34.7 cm | 48% / 52% | 1.96% |
| 5.00 m (16.4 ft) | 4.74 m | 5.29 m | 54.6 cm | 47% / 53% | 1.56% |
| 7.00 m (23.0 ft) | 6.50 m | 7.58 m | 1.08 m | 46% / 54% | 1.11% |
| 10.0 m (32.8 ft) | 9.01 m | 11.2 m | 2.22 m | 45% / 55% | 0.78% |
| 15.0 m (49.2 ft) | 12.9 m | 18.0 m | 5.09 m | 42% / 58% | 0.52% |
| 20.0 m (65.6 ft) | 16.4 m | 25.7 m | 9.27 m | 39% / 61% | 0.39% |
| 30.0 m (98.4 ft) | 22.5 m | 44.9 m | 22.3 m | 33% / 67% | 0.26% |
| 50.0 m (164 ft) | 32.2 m | 112 m | 79.6 m | 22% / 78% | 0.15% |
| 100 m (328 ft) | 47.5 m | ∞ | ∞ | — | 0.08% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
85 mm at other apertures (subject at 3 m)#
Other focal lengths at f/4#
| Focal length | Subject at | Total DoF |
|---|---|---|
| 14 mm | 3.00 m | ∞ |
| 16 mm | 3.00 m | 42.9 m |
| 20 mm | 3.00 m | 5.55 m |
| 24 mm | 3.00 m | 2.99 m |
| 28 mm | 3.00 m | 2.00 m |
| 35 mm | 3.00 m | 1.21 m |
| 40 mm | 3.00 m | 90.8 cm |
| 50 mm | 3.00 m | 57.1 cm |
| 85 mm | 3.00 m | 19.4 cm |
| 105 mm | 3.00 m | 12.6 cm |
| 135 mm | 3.00 m | 7.5 cm |
| 200 mm | 10.0 m | 39.2 cm |
| 300 mm | 10.0 m | 17.2 cm |
| 400 mm | 10.0 m | 9.6 cm |
| 600 mm | 10.0 m | 4.2 cm |
Same lens settings on other formats#
When to use it#
At f/4, a 85 mm lens on APS-C is a natural choice for general photography. Focused at 3 m you get 19.4 cm of sharp zone; for maximum front-to-back sharpness focus at 90.4 m and everything from 45.2 m to infinity will be acceptably sharp.
See also the f/4 aperture guide.
Frequently asked questions#
What is the depth of field of a 85mm lens at f/4?
On APS-C, focused at 3 m, it is 19.4 cm; at 1 m it is 2.0 cm.
What is the hyperfocal distance for 85mm f/4?
90.4 m (297 ft) on APS-C. Everything from 45.2 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources