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Hyperfocal Distance

Calculate the hyperfocal distance for your camera lens. Everything from half this distance to infinity will be acceptably sharp.
mm
f/

Hyperfocal Distance

10.47 m
34.34 ft

Near Focus Limit

5.23 m
17.17 ft
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What is The Physics of Hyperfocal Limits?

The hyperfocal distance is the closest distance at which a lens can be focused while keeping objects at infinity acceptably sharp. It is the mathematical absolute maximum depth of field physically possible for a given lens and aperture combination.

Mathematical Foundation

h≈f2N×c+fh \approx \frac{f^2}{N \times c} + f
hh= Hyperfocal Distance (Millimeters).
ff= Focal Length of the Lens (Millimeters).
NN= Aperture (f-stop number, e.g., f/8).
cc= Circle of Confusion (Millimeters). An optical limit derived from the physical sensor size (e.g., 0.030mm for Full Frame).

Laws & Principles

  • Circle of Confusion (CoC): Due to sensor size and human visual acuity, a point of light passing through a lens isn't focused into an infinitely small dot; it forms a circle. As long as this circle is smaller than the CoC limit, the human eye perceives it as "sharp".
  • The Focal Trap: Doubling your focal length from 24mm to 48mm quadruples your hyperfocal distance limit. The depth of field collapses exponentially as you zoom in.

Step-by-Step Example Walkthrough

" You are shooting a landscape on a Full-Frame sensor (CoC 0.030mm) using a 50mm lens set to f/8. "

  1. 1. Calculate numerator: 50^2 = 2500.
  2. 2. Calculate denominator: 8 * 0.030 = 0.24.
  3. 3. Divide: 2500 / 0.24 = 10416.6 mm.
  4. 4. Add focal length: 10416.6 + 50 = 10466.6 mm = 10.47 meters.
Final Result: If you manually focus your lens exactly at 10.47 meters (34.34 ft), everything from 5.23 meters (17.17 ft) all the way to infinity will be perfectly sharp.

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  1. 1.Enter your values into the input fields above. All inputs are labelled with the expected unit of measurement.
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Pro Tips

Best Practices

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Common Mistakes

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