Hyperfocal Distance Calculator

Frequently Asked Questions

What is the circle of confusion?

The largest blur spot that still looks like a sharp point at standard print or display size. It depends on sensor size and how much you enlarge the image for viewing. Larger sensors use a larger CoC because they need less enlargement.

Why does the formula add the focal length at the end?

The + f term is a small precision correction that matters most for wide lenses and close distances. Many simplified formulas drop it, introducing slight errors that grow as focal length increases relative to H.

Does a smaller aperture always increase depth of field?

Down to about f/11-f/16 on full-frame, yes. Beyond that, diffraction softens the entire image, so more depth of field on paper does not translate to sharper images in practice.

What is zone focus?

Setting focus at the hyperfocal distance and leaving it there so you can shoot quickly without refocusing. Everything from H/2 to infinity stays acceptably sharp as long as the aperture and focal length are unchanged.

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Estimates for informational purposes only.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.

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How It Works

The hyperfocal distance is the closest focus point at which everything from half that distance to infinity appears acceptably sharp. It is the sharpest possible focus distance for maximum depth of field without losing far sharpness. The formula is: H = (focal_length^2 / (f-number x CoC)) + focal_length, where CoC is the circle of confusion for your sensor format.

When you focus exactly at the hyperfocal distance, the near sharp limit is H/2 and the far limit is infinity. If you focus closer than H, the far limit pulls back from infinity; if you focus farther, you are wasting depth of field by pushing the near limit unnecessarily far away.

This tool also lets you enter a focus distance to compute the actual near and far sharp limits at that point, which is useful when you cannot or do not want to focus at the hyperfocal distance - for instance when you need the foreground to be sharper than H/2.

Use Cases

Hyperfocal distance is most valuable in photography requiring maximum depth of field:

Landscape photography: focusing at H keeps foreground rocks and distant mountains both acceptably sharp in a single frame

Street photography: pre-focusing at the hyperfocal distance for zone focus allows instant candid shots without checking focus for every frame

Real estate and interior photography: maximizing depth of field for wide-angle room shots

Group portraits: ensuring all subjects in a deep group remain sharp

Travel and documentary photography: keeping images consistently sharp when shooting quickly

Tips

Focus slightly beyond the hyperfocal distance, not exactly on it, to keep the most distant subjects sharp even with slight focusing error.

Hyperfocal 'sharpness' is acceptably sharp, not critically sharp. For pixel-level sharpness of distant details, focus directly on them.

The hyperfocal distance decreases as you stop down, so a wider aperture like f/2.8 has a much farther hyperfocal point than f/11.

Very small apertures (f/22 and beyond) increase depth of field on paper but diffraction softens the whole image, often giving worse real-world sharpness than f/8-f/11.

Use the distance field to preview DOF at focus distances shorter than H when you need both a sharp close foreground and a sharp background.

FAQ