What is hyperfocal distance?
Hyperfocal distance is the closest focus distance at which objects at infinity still look acceptably sharp. If you focus at that distance, the zone of acceptable sharpness stretches from about half that distance all the way to infinity. It is a way of getting the most depth of field out of a given lens, aperture and sensor.
For example, if the hyperfocal distance for your settings is 4 meters, focusing there gives acceptable sharpness from about 2 meters to infinity.
Why street photographers use it
Street scenes change in an instant, and autofocus can hesitate or pick the wrong target. If you set the lens in advance with a hyperfocal distance and a moderate aperture, nearly everything from a few meters outward will already be in focus. You can then concentrate on timing and composition. This is often called zone focusing or “set and forget” focus.
The formula
The usual approximation is:
H = (f x f) / (N x c) + f
- f is the focal length in millimeters
- N is the f-number
- c is the circle of confusion, a measure of how much blur you accept as sharp
A common choice for c on full-frame cameras is about 0.03 mm, and smaller for smaller sensors (roughly 0.02 mm for APS-C). Different calculators use different values, and the “right” value depends on how large you view the image, so treat the result as a guide rather than an exact number.
Worked examples
These are rounded, full-frame figures using c = 0.03 mm.
| Focal length | Aperture | Hyperfocal distance (approx.) | Sharp from (approx.) |
|---|---|---|---|
| 24mm | f/8 | 2.4 m | 1.2 m |
| 35mm | f/8 | 5.1 m | 2.6 m |
| 35mm | f/11 | 3.7 m | 1.9 m |
| 50mm | f/8 | 10.5 m | 5.2 m |
Notice that wider lenses and smaller apertures give a shorter hyperfocal distance and more of the scene in focus. That is why 28mm or 35mm lenses are popular for street photography.
Setting it without a calculator
- Lens distance scale: some lenses show distances and depth-of-field marks. Set the infinity mark of your chosen aperture opposite the focus index, or set the focus ring at the computed distance.
- Apps and charts: hyperfocal calculators exist for phones, and you can note a few values for your favorite lens and aperture.
- Simple rule of thumb: with a 35mm lens at about f/8, setting focus to roughly 5 meters gives a wide zone of acceptable sharpness.
- Many mirrorless cameras have no distance scale, but may show focus distance in the display or in manual focus assist, and some have a depth-of-field preview. Test your setup.
You will need to switch to manual focus once set, so autofocus does not change it. See autofocus modes explained for the options.
Zone focusing for street photography
Zone focusing builds on the same idea. Instead of focusing at the strict hyperfocal point, you choose a distance range, such as 2 to 5 meters, and set the focus and aperture so that range is sharp.
A basic workflow:
- Choose a lens, often 28mm to 40mm.
- Set an aperture around f/8, depending on available light.
- Set a shutter speed fast enough for moving subjects.
- Use auto ISO if you need to maintain exposure.
- Set focus to the chosen distance.
- Shoot, staying within the distance range.
If you prefer autofocus on the street, a wide area or zone mode with continuous autofocus can work, but it is less predictable. See camera focus points for those options.
Landscape use
For a landscape, hyperfocal focusing helps put foreground rocks and distant mountains within the sharp zone. A frequent approach is to focus slightly closer than the hyperfocal distance as a safety margin, then check the image zoomed in. For very close foreground elements, a single shot may not keep everything sharp, in which case focus stacking (several shots combined) is an option.
Limits to keep in mind
- “Acceptably sharp” is not razor sharp. Objects at the near and far limits will be a little soft when viewed closely or printed large.
- The numbers depend on the circle of confusion, which varies with sensor size, resolution and viewing size.
- Very small apertures bring diffraction, which can reduce sharpness, so there is a balance.
- Focus accuracy matters. An error at the focus ring changes the near and far limits.
- Wider apertures give less margin. At f/2.8, a hyperfocal setup leaves a much larger distance before things are sharp.
Related reading
To understand the opposite goal, see how to get a blurry background. For composition choices that add dimension, see how to create depth in your photography.