This book was easy to read, cover-to-cover, in less than 90 minutes. In the balance, its total content seemed represent more of a beginner's (i.e first timer's) Photoshop how-to book than an in-depth resource on infra red (IR)photography. I was put off by its very simplistic presentational style, and would not recommend it to an intermediate level photographer. While I gained a few useful tips from reading it, I found more useful material by spending 90 minutes on the internet.