Depth of Field Calculator
Calculate near focus, far focus, total depth of field, and hyperfocal distance from focal length, aperture, sensor format, and subject distance.
How depth of field is calculated
Depth of field depends on focal length, aperture, focus distance, and the circle of confusion chosen for the camera format. Smaller apertures, shorter focal lengths, and farther focus distances increase the area that appears acceptably sharp.
Frequently asked questions
What is hyperfocal distance?
Hyperfocal distance is the focus distance that gives the deepest acceptable sharpness toward infinity for a chosen focal length and aperture.
Why do calculators disagree slightly?
They may use different circle-of-confusion values. Use the custom field if you need to match a specific print size, sensor, or manufacturer chart.
Does this account for subject movement?
No. This is an optical focus calculator. Motion blur depends on shutter speed, subject speed, camera movement, and stabilization.
Last updated: 2026-07-12