Depth of field by subject distance#
35 mm at f/1.8 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) | 29.7 cm | 30.4 cm | 0.7 cm | 49% / 51% | 7.13% |
| 50.0 cm (1.64 ft) | 49.0 cm | 51.0 cm | 2.1 cm | 49% / 51% | 4.07% |
| 75.0 cm (2.46 ft) | 72.7 cm | 77.4 cm | 4.7 cm | 48% / 52% | 2.64% |
| 1.00 m (3.28 ft) | 95.9 cm | 1.04 m | 8.5 cm | 48% / 52% | 1.96% |
| 1.50 m (4.92 ft) | 1.41 m | 1.60 m | 19.5 cm | 47% / 53% | 1.29% |
| 2.00 m (6.56 ft) | 1.84 m | 2.19 m | 34.9 cm | 46% / 54% | 0.96% |
| 3.00 m (9.84 ft) | 2.65 m | 3.45 m | 79.8 cm | 43% / 57% | 0.64% |
| 4.00 m (13.1 ft) | 3.40 m | 4.85 m | 1.44 m | 41% / 59% | 0.48% |
| 5.00 m (16.4 ft) | 4.10 m | 6.40 m | 2.30 m | 39% / 61% | 0.38% |
| 7.00 m (23.0 ft) | 5.36 m | 10.1 m | 4.75 m | 35% / 65% | 0.27% |
| 10.0 m (32.8 ft) | 6.95 m | 17.8 m | 10.9 m | 28% / 72% | 0.19% |
| 15.0 m (49.2 ft) | 9.04 m | 44.1 m | 35.0 m | 17% / 83% | 0.13% |
| 20.0 m (65.6 ft) | 10.6 m | 167 m | 156 m | 6% / 94% | 0.09% |
| 30.0 m (98.4 ft) | 12.9 m | ∞ | ∞ | — | 0.06% |
| 50.0 m (164 ft) | 15.6 m | ∞ | ∞ | — | 0.04% |
| 100 m (328 ft) | 18.5 m | ∞ | ∞ | — | 0.02% |
Try other settings#
35 mm at other apertures (subject at 3 m)#
Other focal lengths at f/1.8#
Same lens settings on other formats#
When to use it#
At f/1.8, a 35 mm lens on full frame is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 79.8 cm of sharp zone; for maximum front-to-back sharpness focus at 22.7 m and everything from 11.4 m to infinity will be acceptably sharp.
See also the f/1.8 aperture guide.
Frequently asked questions#
What is the depth of field of a 35mm lens at f/1.8?
On full frame, focused at 3 m, it is 79.8 cm; at 1 m it is 8.5 cm.
What is the hyperfocal distance for 35mm f/1.8?
22.7 m (74.5 ft) on full frame. Everything from 11.4 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources