What is the Purpose of ISO in Photography? – Easy Explanation

ISO is one of the three key settings in photography, but what does it actually do? In this easy explanation, I’ll break down the purpose of ISO, how it controls brightness, and its impact on image quality. You’ll also learn how increasing ISO can introduce noise and when to use high or low ISO settings for the best results. Whether you’re a beginner or need a refresher, this quick guide will make ISO easy to understand. Let’s get started!

This video is from our Digital Photography 101 Course.

About the Author

portrait photographer for portfolio shoot in pune

Hi there, I'm Kush Sharma, the founder of Creative Pad Media, an organization dedicated to simplifying photography and videography education.

We have over 50 online courses that cover various genres in photography & videography, catering to both beginners as well as professionals. These courses are available via Udemy.com. Our courses have been downloaded in over 170 countries.

I hope to see you inside a course very soon!

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