In my humble opinion this work is a significant contribution to photography. Ibarionex sheds light on the process of 'seeing', creating, and shooting an image with available light, shadow, texture and pattern. The narrative style flows well and doesn't get bogged down in detail or technical wizardry. That said this book could give a few more hints on technical know-how. Over all the balance is just about right for me. The book inspires, and has helped me to envisage my subjects in a fresh light.
As an aside the authors podcast is quite wonderfully presented.