Why did I love this book?
Maurice Pirenne was a physiologist who studied vision and was fascinated by the problems of how we see and interpret paintings and photographs. In this book he explains how vision works and uses his own elegant experiments to demystify perspective and visual illusion. What I especially like about this book, is that Pirenne is not content just to explain the theoretical issues, but uses his own skills in photography to explore the issues and provide vivid demonstrations. This is one of the best and clearest books, to my mind, on these tricky questions.