Dialogue with Photography, by Paul Hill and Thomas Cooper, New York; Farrar Straus Giroud $7.95

This collection of interviews with 21 distinguished photoraphers gives us a glimpse of some of the people who perfected the art. Although Paul Hill and Thomas Cooper, highly qualified photographers themselves, do not display the works of their interviewees here, the book should be of extraordinary biographical interest to both enthusiasts and observers of photography. Paul Strand, Man Ray, Imogen Cunningham, Brassai, among others, share their philosophies and reveal the way the changing trends of this century affected their styles.