This book is extremely well done. I started reading at the beginning of the year and I still have not finished reading it as it contains the material to learn. Everything is so explained in detail, each more interesting than each other than it takes me a long time to assimilate. The EOS 7D needed it (at least in my case) of such a deployment of technical advice. To take just one example, about explanations of autofocus (among 40 sections guiding the reader), the 36 pages devoted to the apprehension of the AF and the optimization and adjustment of the design item, accompanied by tables (strong well presented) and photos alone are worth the trip !! Other topics are also of the same ilk !! You learn a lot with this book, I assure you.
Big thank you to you, Mr. Luc Vincent and congratulations on your books.