Photo light calculator

Camera settings

  • Aperture: f/22 - small aperture, any lens, typically used with bright sunlight or flash
  • Shutter: 4 sec - long exposure, needs tripod
  • ISO: 100 ASA - lowest ISO, very little noise
  • Neutral Density filter: 5 stop(s) - to allow for bigger aperture and slower shutter speeds in daylight
  • Scene lighting: EV11.9

    -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
    -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
    starlight to dim ambient lightmoon eclipse to night home interiorneon lights to landscape after sunsetbright light to weak sunbright daylight to direct sunlight
    • Pure Exposure Value: EV100 = 6.92 (based on shutter & aperture)
    • Corrected APEX Value: 11.92 (based on shutter, aperture, ISO and ND)
    • Luminance: 478 cd/m² = 44 cd/ft²
    • Luminance: 139 fL (foot Lambert)

    Explanation

    • Explanation: EV is an estimation of how much light you need for a decent photo with these settings.
    • This can be natural light (sun, moon), artificial continuous light (lamps) or strobes.
    • If your camera settings indicate EV10 and you actually have EV=15 in your scene, your photo will be overexposed. If your settings need EV=10 and you actually have EV=3 your photo will be underexposed.