241 m
Hyperfocal distance
120 m
Sharp from (focused at hyperfocal)
170 mm f/4.0
Full-frame equivalent
15°
Diagonal angle of view
Depth of field by subject distance#
85 mm at f/2 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% | 97.12% |
| 50.0 cm (1.64 ft) | 49.9 cm | 50.1 cm | 0.2 cm | 50% / 50% | 50.32% |
| 75.0 cm (2.46 ft) | 74.8 cm | 75.2 cm | 0.4 cm | 50% / 50% | 31.40% |
| 1.00 m (3.28 ft) | 99.6 cm | 1.00 m | 0.8 cm | 50% / 50% | 22.82% |
| 1.50 m (4.92 ft) | 1.49 m | 1.51 m | 1.8 cm | 50% / 50% | 14.76% |
| 2.00 m (6.56 ft) | 1.98 m | 2.02 m | 3.2 cm | 50% / 50% | 10.90% |
| 3.00 m (9.84 ft) | 2.96 m | 3.04 m | 7.3 cm | 49% / 51% | 7.16% |
| 4.00 m (13.1 ft) | 3.94 m | 4.07 m | 13.0 cm | 49% / 51% | 5.33% |
| 5.00 m (16.4 ft) | 4.90 m | 5.10 m | 20.4 cm | 49% / 51% | 4.25% |
| 7.00 m (23.0 ft) | 6.80 m | 7.21 m | 40.2 cm | 49% / 51% | 3.02% |
| 10.0 m (32.8 ft) | 9.60 m | 10.4 m | 82.5 cm | 48% / 52% | 2.11% |
| 15.0 m (49.2 ft) | 14.1 m | 16.0 m | 1.87 m | 47% / 53% | 1.40% |
| 20.0 m (65.6 ft) | 18.5 m | 21.8 m | 3.33 m | 46% / 54% | 1.05% |
| 30.0 m (98.4 ft) | 26.7 m | 34.3 m | 7.57 m | 44% / 56% | 0.70% |
| 50.0 m (164 ft) | 41.4 m | 63.1 m | 21.7 m | 40% / 60% | 0.42% |
| 100 m (328 ft) | 70.7 m | 171 m | 100 m | 29% / 71% | 0.21% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
85 mm at other apertures (subject at 3 m)#
Other focal lengths at f/2#
Same lens settings on other formats#
When to use it#
At f/2, a 85 mm lens on Micro Four Thirds is a natural choice for portraits and subject isolation. Focused at 3 m you get 7.3 cm of sharp zone; for maximum front-to-back sharpness focus at 241 m and everything from 120 m to infinity will be acceptably sharp.
See also the f/2 aperture guide.
Frequently asked questions#
What is the depth of field of a 85mm lens at f/2?
On Micro Four Thirds, focused at 3 m, it is 7.3 cm; at 1 m it is 0.8 cm.
What is the hyperfocal distance for 85mm f/2?
241 m (790 ft) on Micro Four Thirds. Everything from 120 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources