4.5 km
Hyperfocal distance
2.3 km
Sharp from (focused at hyperfocal)
920 mm f/6.1
Full-frame equivalent
3°
Diagonal angle of view
Depth of field by subject distance#
600 mm at f/4 on APS-C (23.5×15.6 mm), circle of confusion 20 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 |
|---|---|---|---|---|---|
| 1.50 m (4.92 ft) | 1.50 m | 1.50 m | 0.1 cm | 50% / 50% | 425.53% |
| 2.00 m (6.56 ft) | 2.00 m | 2.00 m | 0.1 cm | 50% / 50% | 273.56% |
| 3.00 m (9.84 ft) | 3.00 m | 3.00 m | 0.3 cm | 50% / 50% | 159.57% |
| 4.00 m (13.1 ft) | 4.00 m | 4.00 m | 0.6 cm | 50% / 50% | 112.64% |
| 5.00 m (16.4 ft) | 5.00 m | 5.00 m | 1.0 cm | 50% / 50% | 87.04% |
| 7.00 m (23.0 ft) | 6.99 m | 7.01 m | 2.0 cm | 50% / 50% | 59.84% |
| 10.0 m (32.8 ft) | 9.98 m | 10.0 m | 4.2 cm | 50% / 50% | 40.74% |
| 15.0 m (49.2 ft) | 15.0 m | 15.0 m | 9.6 cm | 50% / 50% | 26.60% |
| 20.0 m (65.6 ft) | 19.9 m | 20.1 m | 17.2 cm | 50% / 50% | 19.74% |
| 30.0 m (98.4 ft) | 29.8 m | 30.2 m | 39.2 cm | 50% / 50% | 13.03% |
| 50.0 m (164 ft) | 49.5 m | 50.6 m | 1.10 m | 49% / 51% | 7.75% |
| 100 m (328 ft) | 97.8 m | 102 m | 4.42 m | 49% / 51% | 3.85% |
Try other settings#
Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—
600 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 | 42.9 m |
| 20 mm | 3.00 m | 5.55 m |
| 24 mm | 3.00 m | 2.99 m |
| 28 mm | 3.00 m | 2.00 m |
| 35 mm | 3.00 m | 1.21 m |
| 40 mm | 3.00 m | 90.8 cm |
| 50 mm | 3.00 m | 57.1 cm |
| 85 mm | 3.00 m | 19.4 cm |
| 105 mm | 3.00 m | 12.6 cm |
| 135 mm | 3.00 m | 7.5 cm |
| 200 mm | 10.0 m | 39.2 cm |
| 300 mm | 10.0 m | 17.2 cm |
| 400 mm | 10.0 m | 9.6 cm |
| 600 mm | 10.0 m | 4.2 cm |
Same lens settings on other formats#
When to use it#
At f/4, a 600 mm lens on APS-C is a natural choice for general photography. Focused at 3 m you get 0.3 cm of sharp zone; for maximum front-to-back sharpness focus at 4.5 km and everything from 2.3 km to infinity will be acceptably sharp.
See also the f/4 aperture guide.
Frequently asked questions#
What is the depth of field of a 600mm lens at f/4?
On APS-C, focused at 3 m, it is 0.3 cm; at 1 m it is not applicable (inside minimum focus).
What is the hyperfocal distance for 600mm f/4?
4.5 km (14766 ft) on APS-C. Everything from 2.3 km to infinity is acceptably sharp.
Last updated October 03, 2026 · How we calculate · Sources