Exposure Equivalents Calculator
Calculate equivalent exposure settings for different aperture, shutter speed, and ISO combinations
About this calculator
The Exposure Equivalents Calculator helps photographers determine equivalent camera settings that produce the same exposure value while adjusting aperture, shutter speed, and ISO independently. This tool is essential for maintaining proper exposure when you need to change one setting for creative or technical reasons - like switching to a faster shutter speed to freeze motion or adjusting aperture for depth of field control. It eliminates guesswork and ensures consistent exposure across different shooting scenarios.
How to use
Enter your current camera settings (aperture, shutter speed, and ISO) into the calculator. Next, adjust one or more settings to your desired values. The calculator will automatically compute the equivalent settings needed to maintain the same exposure, showing you the compensating adjustments required for the other parameters.
Frequently asked questions
What is exposure equivalence in photography?
Exposure equivalence means different combinations of aperture, shutter speed, and ISO that produce identical brightness levels in your final image.
Why would I need equivalent exposure settings?
You need equivalent settings when changing one parameter for creative control while maintaining the same overall exposure and image brightness.
How does changing ISO affect equivalent exposures?
Higher ISO increases sensor sensitivity, so you can use faster shutter speeds or smaller apertures while maintaining equivalent exposure levels.