Photography calculators and templates

Exposure and Shutter Calculators

These tools relate aperture, shutter speed and ISO. Start from one exposure and see what the other settings must be, get the EV, find Sunny 16 settings for the sky, plan a time lapse from shooting time and interval, or print charts of shutter speeds and exposure combinations.

Tools in this group

  • Aperture, Shutter Speed and ISO Chart — Choose a scene or an EV and get a printable grid of shutter speeds for each aperture and ISO that give the same exposure.
  • Exposure Calculator — Start from one exposure, change a setting, and see what the others must become. Includes an ND filter time calculator.
  • Exposure Value Calculator — Enter an aperture, a shutter time and an ISO to get the EV, or pick an EV to see every aperture and shutter pair that matches.
  • Shutter Speed Chart — Every full-stop shutter speed with its exact time and what it is usually used for, and a calculator for the slowest handheld speed.
  • Sunny 16 Rule Calculator — Pick an ISO and the sky conditions to get the aperture and shutter speed the rule gives, and the equal exposures around it.
  • Time Lapse Calculator — Enter how long you will shoot and the interval to get the number of photos, the finished clip length and the card space.