Photo light calculator

Camera settings

  • Aperture: f/3.5 - average aperture, could be cheap kit lens
  • Shutter: 2 sec - long exposure, needs tripod
  • ISO: 400 ASA - low ISO, little noise
  • No Neutral Density filter
  • Scene lighting: EV0.6

    -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 = 2.61 (based on shutter & aperture)
    • APEX Exposure Value: EV400 = 0.61 (based on shutter, aperture, ISO)
    • Luminance: 0.1895 cd/m² = 0.0176 cd/ft²
    • Luminance: 0.0553 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.

    Examples

    References