92.0 m
Hyperfocal distance
46.0 m
Sharp from (focused at hyperfocal)
105 mm f/4.0
Full-frame equivalent
23°
Diagonal angle of view
Depth of field by subject distance#
105 mm at f/4 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% | 39.26% |
| 50.0 cm (1.64 ft) | 49.8 cm | 50.2 cm | 0.4 cm | 50% / 50% | 19.38% |
| 75.0 cm (2.46 ft) | 74.5 cm | 75.5 cm | 1.1 cm | 50% / 50% | 11.87% |
| 1.00 m (3.28 ft) | 99.0 cm | 1.01 m | 1.9 cm | 50% / 50% | 8.55% |
| 1.50 m (4.92 ft) | 1.48 m | 1.52 m | 4.6 cm | 49% / 51% | 5.49% |
| 2.00 m (6.56 ft) | 1.96 m | 2.04 m | 8.3 cm | 49% / 51% | 4.04% |
| 3.00 m (9.84 ft) | 2.91 m | 3.10 m | 18.9 cm | 48% / 52% | 2.64% |
| 4.00 m (13.1 ft) | 3.84 m | 4.18 m | 34.0 cm | 48% / 52% | 1.97% |
| 5.00 m (16.4 ft) | 4.75 m | 5.28 m | 53.4 cm | 47% / 53% | 1.56% |
| 7.00 m (23.0 ft) | 6.51 m | 7.57 m | 1.06 m | 46% / 54% | 1.11% |
| 10.0 m (32.8 ft) | 9.03 m | 11.2 m | 2.18 m | 45% / 55% | 0.77% |
| 15.0 m (49.2 ft) | 12.9 m | 17.9 m | 4.99 m | 42% / 58% | 0.51% |
| 20.0 m (65.6 ft) | 16.4 m | 25.5 m | 9.09 m | 39% / 61% | 0.38% |
| 30.0 m (98.4 ft) | 22.6 m | 44.5 m | 21.8 m | 34% / 66% | 0.26% |
| 50.0 m (164 ft) | 32.4 m | 109 m | 77.0 m | 23% / 77% | 0.15% |
| 100 m (328 ft) | 47.9 m | ∞ | ∞ | — | 0.08% |
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/4#
| Focal length | Subject at | Total DoF |
|---|---|---|
| 14 mm | 3.00 m | ∞ |
| 16 mm | 3.00 m | ∞ |
| 20 mm | 3.00 m | 26.7 m |
| 24 mm | 3.00 m | 6.04 m |
| 28 mm | 3.00 m | 3.44 m |
| 35 mm | 3.00 m | 1.90 m |
| 40 mm | 3.00 m | 1.40 m |
| 50 mm | 3.00 m | 86.7 cm |
| 85 mm | 3.00 m | 29.1 cm |
| 105 mm | 3.00 m | 18.9 cm |
| 135 mm | 3.00 m | 11.3 cm |
| 200 mm | 10.0 m | 58.9 cm |
| 300 mm | 10.0 m | 25.9 cm |
| 400 mm | 10.0 m | 14.4 cm |
| 600 mm | 10.0 m | 6.3 cm |
Same lens settings on other formats#
When to use it#
At f/4, a 105 mm lens on full frame is a natural choice for general photography. Focused at 3 m you get 18.9 cm of sharp zone; for maximum front-to-back sharpness focus at 92.0 m and everything from 46.0 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 105mm lens at f/4?
On full frame, focused at 3 m, it is 18.9 cm; at 1 m it is 1.9 cm.
What is the hyperfocal distance for 105mm f/4?
92.0 m (302 ft) on full frame. Everything from 46.0 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources