217 m
Hyperfocal distance
109 m
Sharp from (focused at hyperfocal)
135 mm f/2.8
Full-frame equivalent
18°
Diagonal angle of view
Depth of field by subject distance#
135 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) | 30.0 cm | 30.0 cm | 0.0 cm | 50% / 50% | 109.58% |
| 50.0 cm (1.64 ft) | 49.9 cm | 50.1 cm | 0.2 cm | 50% / 50% | 49.54% |
| 75.0 cm (2.46 ft) | 74.8 cm | 75.2 cm | 0.4 cm | 50% / 50% | 29.40% |
| 1.00 m (3.28 ft) | 99.6 cm | 1.00 m | 0.8 cm | 50% / 50% | 20.90% |
| 1.50 m (4.92 ft) | 1.49 m | 1.51 m | 1.9 cm | 50% / 50% | 13.25% |
| 2.00 m (6.56 ft) | 1.98 m | 2.02 m | 3.4 cm | 50% / 50% | 9.69% |
| 3.00 m (9.84 ft) | 2.96 m | 3.04 m | 7.9 cm | 49% / 51% | 6.31% |
| 4.00 m (13.1 ft) | 3.93 m | 4.07 m | 14.3 cm | 49% / 51% | 4.68% |
| 5.00 m (16.4 ft) | 4.89 m | 5.11 m | 22.4 cm | 49% / 51% | 3.72% |
| 7.00 m (23.0 ft) | 6.79 m | 7.23 m | 44.3 cm | 48% / 52% | 2.63% |
| 10.0 m (32.8 ft) | 9.57 m | 10.5 m | 91.1 cm | 48% / 52% | 1.83% |
| 15.0 m (49.2 ft) | 14.0 m | 16.1 m | 2.07 m | 47% / 53% | 1.22% |
| 20.0 m (65.6 ft) | 18.3 m | 22.0 m | 3.69 m | 45% / 55% | 0.91% |
| 30.0 m (98.4 ft) | 26.4 m | 34.8 m | 8.42 m | 43% / 57% | 0.61% |
| 50.0 m (164 ft) | 40.7 m | 64.9 m | 24.3 m | 39% / 61% | 0.36% |
| 100 m (328 ft) | 68.5 m | 185 m | 117 m | 27% / 73% | 0.18% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
135 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 135 mm lens on full frame is a natural choice for portraits and subject isolation. Focused at 3 m you get 7.9 cm of sharp zone; for maximum front-to-back sharpness focus at 217 m and everything from 109 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 135mm lens at f/2.8?
On full frame, focused at 3 m, it is 7.9 cm; at 1 m it is 0.8 cm.
What is the hyperfocal distance for 135mm f/2.8?
217 m (712 ft) on full frame. Everything from 109 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources