Hyperfocal Distance Calculator for Photography

What Is Hyperfocal Distance?

Hyperfocal distance is the closest focus distance at which objects at infinity still appear acceptably sharp. Landscape photographers use it to maximize depth of field without wasting focus range on empty foreground.

Hyperfocal Distance Formula

$$H = \frac{f^2}{N \cdot c} + f$$

$f$ is focal length in millimeters, $N$ is the f-number (aperture), and $c$ is the circle of confusion in millimeters. When you focus at $H$, everything from about $H/2$ to infinity falls within the depth of field.

Circle of Confusion

The circle of confusion defines how large a blur spot can be before it looks out of focus. Full-frame sensors often use 0.029 mm. APS-C sensors use about 0.018 mm. Smaller sensors use tighter values.

Frequently Asked Questions

What units does the formula use?

Focal length and circle of confusion must be in millimeters. The result is also in millimeters, then converted to meters and feet in the tool.

Why does a smaller aperture increase hyperfocal distance?

A larger f-number (smaller aperture) reduces blur for a given focus distance, which pushes the hyperfocal point farther from the camera.

What happens when I focus at the hyperfocal distance?

Acceptably sharp focus extends from roughly half the hyperfocal distance to infinity. Near objects closer than H/2 will be soft.

Which circle of confusion should I pick?

Use the preset that matches your sensor size. Full frame, APS-C, and Micro Four Thirds presets cover most cameras. Choose custom for specialized calculations.

Does focal length affect hyperfocal distance?

Yes. Longer lenses have much farther hyperfocal distances. Wide-angle lenses bring the hyperfocal point closer, which helps landscape depth of field.

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Hyperfocal Distance Calculator

What Is Hyperfocal Distance?

Hyperfocal Distance Formula

Circle of Confusion

Frequently Asked Questions

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