Understanding Exposure was the first educational photography book I read that I actually found useful. I can honestly say that back when I was still learning the ins and outs of photography, this book had a larger impact on me than any other. In reading Peterson’s book, I went from guessing and shooting blind to having a pretty good idea what I was doing. I’ve continued to grow since then, but this is where I got my footing. This book is actually a fairly quick read, and it’s categorized well enough that you can skip around if you need to (though I recommend reading the whole thing). The author does a great job making the subject matter entertaining as well, and it feels nothing like the kind of dry textbook people fear when they think about learning the technical aspects of photography.