Depth of Field Calculator

How it works

The hyperfocal distance is H = f² ÷ (N × c) + f. Near limit = s(H − f) ÷ (H + s − 2f) and far limit = s(H − f) ÷ (H − s). When the focus distance reaches H, the far limit becomes infinity and shows as a dash. A circle of confusion of 0.03 mm suits full frame, 0.02 mm suits APS-C, and 0.015 mm suits Micro Four Thirds. Example: A 50 mm lens at f/2.8 focused at 3 m is sharp from 2.73 m to 3.33 m, a depth of field of 0.6 m.

FAQ