This is the fourth revised and expanded edition of the text first published 1937, rewritten and published under this title for the first time 1949. Contents: The elusive image; The mirror with a memory; Prints from paper; Portraits for the million; Pictorial effect; The faithful witness; The conquest of action; Photography as an art; Straight photography; Documentary; Instant vision; The quest for form; For the printed page; In color; Recent trends; Notes; Bibliography; Index.