Book excerpt: Ian Jeffrey is a superb guide in this profusely illustrated introduction to the appreciation of photography as an art form. Novices and experts alike will gain a deeper understanding of great photographers and their work, as Jeffrey decodes key images and provides essential biographical and historical background. Profiles of more than 100 major photographers, including Alfred Stieglitz, Bill Brandt, Henri Cartier-Bresson, Walker Evans, Paul Strand and Lazlo Moholy-Nagy, highlight particular examples of styles and movements throughout the history of the medium. Each entry includes a concise biography along with an illuminating discussion of key works and nuggets of contextual information, making this book the ideal gallery companion for photography aficionados everywhere.