I purchased this book many years ago when I was desperate to understand how to best use my digital camera, in-doors and take pictures of products that I sold. This book was a beginning in understanding of lighting. From the book I was able to produce better pictures, but I still needed a better understanding of bulbs, fixtures and background. Once I meet a professional photographer I instantly understood because I ate this book over and over. I was able to ask all kinds of intelligent questions. Being in a real studio made me understand the limitations and frustrations I was having trying to produce a produce with a white background. Buy this book to understand. Don't think that this will help you bring you to a professional status. I am still looking for that book.