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Hyperfocal Distance Calculator

Calculate the hyperfocal distance for your camera lens to maximize depth of field and ensure both foreground and infinity are perfectly sharp.

mm
f/
Hyperfocal Distance
2.42
Focus range starts at1.21 m

Calculated locally in your browser. Fast, secure, and private.

The Landscape Photographer's Secret: Hyperfocal Distance

Hyperfocal distance is the mathematical focus point that allows a photographer to achieve the maximum possible depth of field. When a lens is focused at the hyperfocal distance, everything from half of that distance to infinity will be in 'acceptably sharp' focus. This is a critical technique for landscape photography, where you often want a foreground rock and a distant mountain range to both be sharp in the same frame.

The Variables of Sharpness

The hyperfocal distance changes based on:

  1. Focal Length: Wider lenses (shorter focal lengths) have much closer hyperfocal distances.
  2. Aperture: Smaller apertures (higher f-numbers like f/11 or f/16) bring the hyperfocal point closer to the camera.
  3. Sensor Size: The 'Circle of Confusion' (the threshold for what our eyes see as sharp) varies between sensor formats.

The Formula

The calculation involves the focal length, the aperture, and the Circle of Confusion constant.

H = f² / (N * c) + f

Where:
f=
Focal length of the lens in mm
N=
Aperture (f-number)
c=
Circle of Confusion (standard is 0.03 for Full Frame)

Practical Application

In the field, once you calculate the hyperfocal distance (e.g. 10 feet), you switch your lens to manual focus and set the distance scale to exactly 10 feet. Even though you are not focused on the distant mountains, they will fall within the 'acceptably sharp' range of the depth of field.

Frequently Asked Questions

If you focus at infinity, the 'back' half of your depth of field is effectively wasted on the sky beyond the mountains. By focusing at the hyperfocal distance, you 'pull' that depth of field closer to the camera, making much more of your foreground sharp while still keeping the background acceptable.

While a smaller aperture (like f/22) makes the depth of field deeper, it eventually causes 'diffraction'—where light waves are squeezed through such a tiny hole that they begin to interfere with each other, actually making the entire image slightly softer. Most photographers avoid going beyond f/11 or f/16 for this reason.

Many modern autofocus lenses have omitted the physical distance scale on the barrel. To use hyperfocal distance with these lenses, you can use your camera's 'on-screen' distance scale (if available) or focus on an object at the calculated distance and then lock the focus.

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