Christian has created an easy to read, easy to understand book on all things related to HDRI. This book has something for all skill levels. Even if you're an expert already, you will learn something new from this very thorough book. He has as witty sense of humor that helps take a potentially dry subject, become fun and interesting. He also tells you, from a practical standpoint, the good and the bad of each tool, situation, or utility.

For many years, HDR has taken a hodge podge of tools and hacks. Now, HDR is finally mainstream and everyone who isn't already using it, should be using it.