Depth-of-field calculator

Calculate the depth-of-field (the 'bokeh' effect) from the technical parameters of your lens/camera and your subject distance.

Calculation

  • Circle of Confusion: 0.019 mm
    the largest blur spot that will still be perceived by the human eye as a point
    is an empirical constant, only influenced by crop factor
  • Hyperfocal distance: 271.62 meter
    distance beyond which all objects can be brought into an acceptable focus
    influenced by focal length and aperture
  • Objects will be in focus from 1.99m to 2.01m
  • In-focus range = 0.03m = 1.4% of subject distance
  • Very shallow depth of field

Simulation

↙️ 📷 Camera↙️ 🧍 Subject @ 2 m
nearestfarthest

Composition calculator for focal length 85 mm, distance 2 meter

References

  • Circle of Confusion
  • Hyperfocal Distance