Harry Callahan

American photographer and teacher
American, (1912–1999)
Callahan became interested in photography in 1938, and was influenced by the work of Ansel Adams after attending a lecture in 1941. He taught photography at the Chicago Institute of Design in 1946, and took over as head of its Department of Photography in 1949. During this time, he became friends with Hugo Weber, Mies van der Rohe, and Edward Steichen. His work shows an attention to details in nature, and he also experimented with double exposures.