Understanding ISO Settings in Photography

ISO, like exposure and aperture, is one of the three fundamental components of the exposure triangle. Of the three, it tends to be the photography setting that most confuses people. This is a real shame since it’s really not a difficult concept to understand. In fact, the ISO effects two things:

  1. The amount of light in a scene that’s required to produce a given exposure.
  2. The image quality and amount of noise in the image.

By the end of this guide, you will have a solid understanding of what the ISO is and how to properly control it to obtain the best possible exposure for your images. Let’s jump right in!

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