I found the reading to be very direct and informational. I especially appreciate the reference tables as they categorized a lot of very useful detailed information. I found myself spending a lot of time reading and rereading the sections on DOF and circles of confusion. While I have a grasp of the basics I still get things all jumbled up in my head when I try to make sense of it sometimes so it was nice to have a clear, concise paragraph to set the record straight. I also found the comparative photographs of wide/50mm/telephoto images incredibly useful. The concept of what a wide angle vs telephoto lens captures is simple enough but the illustration helped to highlight the dramatic effect the lenses can have besides just simple cropping.