Exposure Triangle Simulator

Photography calculators

Free calculators for the numbers photographers look up most. Each one works on desktop and phone, shows the formula it uses, and links to a lesson where you can try the setting in the camera simulator.

Key takeaways

The short version

  • Depth of field calculator: near and far limits, hyperfocal distance.
  • Exposure value calculator: EV from any setting, and every equivalent exposure.
  • ND filter calculator: long exposure time with a built-in timer.
  • Star calculator: 500 rule, 300 rule and NPF rule.

Last updated · Exposure Triangle Simulator editorial team · How we test

Page 1 of the free Camera Settings Cheat Sheet PDF, showing the ISO chart
Free download

Get the printable camera settings cheat sheet

Two pages to keep in your camera bag: the full ISO chart, settings for 10 common shots, handheld shutter speeds by lens, ND filter times and the five rules worth memorizing.

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FAQ

Frequently asked questions

Are these calculators free?

Yes, with no sign-up. They run in your browser.

Do they work for crop-sensor cameras?

Yes. The depth of field and star calculators let you choose full frame, APS-C, Micro Four Thirds, 1-inch or medium format.