Photography cheat sheet: How to understand ISO settings

The ability to adjust your camera’s sensitivity (ISO) is one of the great advantages of digital capture. Unlike with film cameras, you can change the ISO for every shot with ease, should you wish to. But when and why should you change this fundamental photographic control?

Changing your ISO setting means that you can tailor the camera to various situations. Doing so will help you to end up with an image that’s sharp and appropriately exposed, whatever the environment.

Steve Liem

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