Tool

Depth of Field Calculator

See exactly what stays sharp for any focal length, aperture and subject distance.

Sensor format

Focal length (mm)

Aperture (f/)

Subject distance (m)

Results

Near focus limit: 2.73 m
Far focus limit: 3.33 m
Total depth of field: 0.60 m
In front of subject: 0.27 m
Behind subject: 0.33 m
Hyperfocal distance: 29.81 m

What is depth of field?

Depth of field is the distance between the nearest and farthest objects that appear acceptably sharp in an image. A shallow depth of field isolates a subject with a soft background; a deep depth of field keeps an entire scene sharp.

What affects it?

Aperture — wider apertures (small f-numbers) reduce depth of field.
Focal length — longer lenses reduce depth of field at a given distance.
Subject distance — getting closer reduces depth of field.
Sensor size — larger sensors reduce depth of field for the same framing.

Hyperfocal distance

Focusing at the hyperfocal distance makes everything from half that distance to infinity acceptably sharp — the classic landscape technique for maximum depth of field.