184 m
Hyperfocal distance
91.9 m
Sharp from (focused at hyperfocal)
210 mm f/8.0
Full-frame equivalent
12°
Diagonal angle of view
Depth of field by subject distance#
105 mm at f/4 on Micro Four Thirds (17.3×13 mm), circle of confusion 15 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% | 81.70% |
| 50.0 cm (1.64 ft) | 49.9 cm | 50.1 cm | 0.2 cm | 50% / 50% | 40.33% |
| 75.0 cm (2.46 ft) | 74.7 cm | 75.3 cm | 0.5 cm | 50% / 50% | 24.70% |
| 1.00 m (3.28 ft) | 99.5 cm | 1.00 m | 1.0 cm | 50% / 50% | 17.80% |
| 1.50 m (4.92 ft) | 1.49 m | 1.51 m | 2.3 cm | 50% / 50% | 11.42% |
| 2.00 m (6.56 ft) | 1.98 m | 2.02 m | 4.1 cm | 49% / 51% | 8.41% |
| 3.00 m (9.84 ft) | 2.95 m | 3.05 m | 9.5 cm | 49% / 51% | 5.50% |
| 4.00 m (13.1 ft) | 3.92 m | 4.09 m | 17.0 cm | 49% / 51% | 4.09% |
| 5.00 m (16.4 ft) | 4.87 m | 5.14 m | 26.7 cm | 49% / 51% | 3.25% |
| 7.00 m (23.0 ft) | 6.75 m | 7.27 m | 52.6 cm | 48% / 52% | 2.31% |
| 10.0 m (32.8 ft) | 9.49 m | 10.6 m | 1.08 m | 47% / 53% | 1.61% |
| 15.0 m (49.2 ft) | 13.9 m | 16.3 m | 2.45 m | 46% / 54% | 1.07% |
| 20.0 m (65.6 ft) | 18.0 m | 22.4 m | 4.38 m | 45% / 55% | 0.80% |
| 30.0 m (98.4 ft) | 25.8 m | 35.8 m | 10.0 m | 42% / 58% | 0.53% |
| 50.0 m (164 ft) | 39.3 m | 68.6 m | 29.3 m | 36% / 64% | 0.32% |
| 100 m (328 ft) | 64.8 m | 219 m | 154 m | 23% / 77% | 0.16% |
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 | 33.3 m |
| 16 mm | 3.00 m | 8.21 m |
| 20 mm | 3.00 m | 3.35 m |
| 24 mm | 3.00 m | 2.06 m |
| 28 mm | 3.00 m | 1.44 m |
| 35 mm | 3.00 m | 89.0 cm |
| 40 mm | 3.00 m | 67.4 cm |
| 50 mm | 3.00 m | 42.7 cm |
| 85 mm | 3.00 m | 14.5 cm |
| 105 mm | 3.00 m | 9.5 cm |
| 135 mm | 3.00 m | 5.7 cm |
| 200 mm | 10.0 m | 29.4 cm |
| 300 mm | 10.0 m | 12.9 cm |
| 400 mm | 10.0 m | 7.2 cm |
| 600 mm | 10.0 m | 3.1 cm |
Same lens settings on other formats#
When to use it#
At f/4, a 105 mm lens on Micro Four Thirds is a natural choice for general photography. Focused at 3 m you get 9.5 cm of sharp zone; for maximum front-to-back sharpness focus at 184 m and everything from 91.9 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 Micro Four Thirds, focused at 3 m, it is 9.5 cm; at 1 m it is 1.0 cm.
What is the hyperfocal distance for 105mm f/4?
184 m (603 ft) on Micro Four Thirds. Everything from 91.9 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources