DEPTH OF FIELD CALCULATOR

IMAGE: Knelstrom Media

​This is a practical tool for people who want their focus nailed without guesswork. Set your focal length, aperture, distance, and sensor format, and it'll give you the real numbers: hyperfocal distance, where focus actually starts, where it ends, and how much depth of field you're working with. No myths, no forum-wisdom—just the maths. Useful for portraits, landscapes, low-light work, or any shot where precision matters more than Theory.

Depth of Field Calculator

Focal length

mm

Aperture

f /

Subject distance

m

Sensor / format Full Frame (36×24 mm) APS-C (Nikon / Sony ~1.5x) APS-C (Canon ~1.6x) Micro Four Thirds 1" Sensor Medium Format (approx)

Enter focal length, aperture, and distance to see depth of field.