What is hyperfocal distance?

Hyperfocal distance is the closest point you can focus a lens so that objects from half that distance to infinity appear acceptably sharp. Focusing at this distance maximizes overall depth of field.

What is circle of confusion (CoC)?

The circle of confusion is the maximum blur spot size that is still perceived as a sharp point on the final print or display. It depends on sensor size and typical viewing conditions. Full-frame sensors use ~0.029 mm, APS-C ~0.019 mm, and Micro Four Thirds ~0.015 mm.

Why does a smaller f-number (wider aperture) reduce depth of field?

A wider aperture (smaller f-number) produces a shallower depth of field because more light enters at oblique angles, increasing the size of blur circles for objects outside the plane of focus. A smaller aperture (larger f-number) reduces those blur circles, extending depth of field.

How do I use hyperfocal distance in practice?

Set your focus distance to the calculated hyperfocal distance. Everything from half the hyperfocal distance to infinity will appear acceptably sharp. Use manual focus or the distance scale on your lens.

Does this work for video?

Yes, but video often uses a stricter CoC (around 0.011 mm for 4K) because footage is scrutinized at closer viewing distances. You can enter a custom CoC value to match your use case.

Hyperfocal Distance Calculator

Name: Hyperfocal Distance Calculator
Availability: InStock
Author: Nham Vu

Enter focal length, aperture, and sensor size to instantly calculate hyperfocal distance and depth-of-field limits.

Lens & Sensor Settings

Sensor Size

Focal Length (mm)

Aperture (f-number)

f /

Focus Distance (m) (optional)

Leave blank to show results at the hyperfocal distance.

Enter lens settings and click Calculate.

Copied!

Summary

Enter focal length, aperture, and sensor size to instantly calculate hyperfocal distance and depth-of-field limits.

How it works

Select your camera sensor size or enter a custom circle of confusion (CoC) value.
Enter the lens focal length in millimeters.
Enter the aperture f-number (e.g. 8 for f/8).
Optionally enter a subject focus distance to compute near and far depth-of-field limits.
The calculator applies the formula H = f² / (N × c) to find the hyperfocal distance.
Near and far DOF limits are derived from the hyperfocal distance and your focus distance.

Use cases

Landscape photographers pre-focusing for maximum sharpness from foreground to infinity.
Street photographers setting hyperfocal distance for zone-focus shooting.
Architectural photographers choosing aperture to keep entire scenes in focus.
Videographers planning focus pulls with known depth-of-field margins.
Photography students learning the relationship between aperture, focal length, and DOF.
Drone pilots estimating ground sharpness at a given altitude and focal length.

Frequently Asked Questions

Related tools

Percentage Fraction Calculator Average Calculator

Last updated: 2026-05-29 · Reviewed by Nham Vu