The practical zone system for film and digital photography : classical tool, universal applications / Chris Johnson. Johnson, Chris, 1948- Zone system (Photography). TR591 .J64 2017 771 JOP 23 Revised edition of: The practical zone system. "A Focal Press book." Glossary: p. 339-343. Includes bibliographical references and index. 2017 Text xxi, 352 p. : eng