The post What Is ISO? A Simple Guide to ISO in Photography appeared first on Digital Photography School. It was authored by Darren Rowse. What is ISO? Why does ISO matter? And most importantly, when should you use a high ISO vs a low ISO for the best image quality? In this article, I’m going to answer all of these questions – and more. ISO might seem like a complex topic, but by the time you’ve finished, you’ll be an absolute master (and you’ll be able to confidently choose the perfect ISO for every shooting situation). Sound good? Let’s get started. What is ISO in photography? ISO refers to your camera’s sensitivity to light. The higher the ISO, the more sensitive...