304 m
Hyperfocal distance
152 m
Sharp from (focused at hyperfocal)
270 mm f/8.0
Full-frame equivalent
9°
Diagonal angle of view
Depth of field by subject distance#
135 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 | 0.0 cm | 50% / 50% | 159.62% |
| 50.0 cm (1.64 ft) | 49.9 cm | 50.1 cm | 0.1 cm | 50% / 50% | 72.16% |
| 75.0 cm (2.46 ft) | 74.8 cm | 75.2 cm | 0.3 cm | 50% / 50% | 42.82% |
| 1.00 m (3.28 ft) | 99.7 cm | 1.00 m | 0.6 cm | 50% / 50% | 30.45% |
| 1.50 m (4.92 ft) | 1.49 m | 1.51 m | 1.3 cm | 50% / 50% | 19.29% |
| 2.00 m (6.56 ft) | 1.99 m | 2.01 m | 2.5 cm | 50% / 50% | 14.12% |
| 3.00 m (9.84 ft) | 2.97 m | 3.03 m | 5.7 cm | 50% / 50% | 9.19% |
| 4.00 m (13.1 ft) | 3.95 m | 4.05 m | 10.2 cm | 49% / 51% | 6.81% |
| 5.00 m (16.4 ft) | 4.92 m | 5.08 m | 16.0 cm | 49% / 51% | 5.41% |
| 7.00 m (23.0 ft) | 6.85 m | 7.16 m | 31.7 cm | 49% / 51% | 3.84% |
| 10.0 m (32.8 ft) | 9.69 m | 10.3 m | 65.0 cm | 48% / 52% | 2.67% |
| 15.0 m (49.2 ft) | 14.3 m | 15.8 m | 1.47 m | 48% / 52% | 1.77% |
| 20.0 m (65.6 ft) | 18.8 m | 21.4 m | 2.63 m | 47% / 53% | 1.33% |
| 30.0 m (98.4 ft) | 27.3 m | 33.3 m | 5.96 m | 45% / 55% | 0.88% |
| 50.0 m (164 ft) | 42.9 m | 59.8 m | 16.9 m | 42% / 58% | 0.53% |
| 100 m (328 ft) | 75.3 m | 149 m | 73.7 m | 34% / 66% | 0.26% |
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/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 135 mm lens on Micro Four Thirds is a natural choice for general photography. Focused at 3 m you get 5.7 cm of sharp zone; for maximum front-to-back sharpness focus at 304 m and everything from 152 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 135mm lens at f/4?
On Micro Four Thirds, focused at 3 m, it is 5.7 cm; at 1 m it is 0.6 cm.
What is the hyperfocal distance for 135mm f/4?
304 m (997 ft) on Micro Four Thirds. Everything from 152 m to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources