131 m
Hyperfocal distance
65.7 m
Sharp from (focused at hyperfocal)
105 mm f/2.8
Full-frame equivalent
23°
Diagonal angle of view
Depth of field by subject distance#
105 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 | 0.1 cm | 50% / 50% | 56.09% |
| 50.0 cm (1.64 ft) | 49.8 cm | 50.2 cm | 0.3 cm | 50% / 50% | 27.69% |
| 75.0 cm (2.46 ft) | 74.6 cm | 75.4 cm | 0.7 cm | 50% / 50% | 16.96% |
| 1.00 m (3.28 ft) | 99.3 cm | 1.01 m | 1.4 cm | 50% / 50% | 12.22% |
| 1.50 m (4.92 ft) | 1.48 m | 1.52 m | 3.2 cm | 49% / 51% | 7.84% |
| 2.00 m (6.56 ft) | 1.97 m | 2.03 m | 5.8 cm | 49% / 51% | 5.77% |
| 3.00 m (9.84 ft) | 2.94 m | 3.07 m | 13.2 cm | 49% / 51% | 3.78% |
| 4.00 m (13.1 ft) | 3.88 m | 4.12 m | 23.8 cm | 49% / 51% | 2.81% |
| 5.00 m (16.4 ft) | 4.82 m | 5.19 m | 37.3 cm | 48% / 52% | 2.23% |
| 7.00 m (23.0 ft) | 6.65 m | 7.39 m | 73.8 cm | 47% / 53% | 1.59% |
| 10.0 m (32.8 ft) | 9.30 m | 10.8 m | 1.52 m | 46% / 54% | 1.11% |
| 15.0 m (49.2 ft) | 13.5 m | 16.9 m | 3.45 m | 44% / 56% | 0.73% |
| 20.0 m (65.6 ft) | 17.4 m | 23.6 m | 6.21 m | 42% / 58% | 0.55% |
| 30.0 m (98.4 ft) | 24.4 m | 38.8 m | 14.4 m | 39% / 61% | 0.37% |
| 50.0 m (164 ft) | 36.2 m | 80.7 m | 44.4 m | 31% / 69% | 0.22% |
| 100 m (328 ft) | 56.8 m | 419 m | 362 m | 12% / 88% | 0.11% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
105 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 105 mm lens on full frame is a natural choice for portraits and subject isolation. Focused at 3 m you get 13.2 cm of sharp zone; for maximum front-to-back sharpness focus at 131 m and everything from 65.7 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 105mm lens at f/2.8?
On full frame, focused at 3 m, it is 13.2 cm; at 1 m it is 1.4 cm.
What is the hyperfocal distance for 105mm f/2.8?
131 m (431 ft) on full frame. Everything from 65.7 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources