American, 1902-1984. Ansel Adams was one of the most influential black-and-white landscape photographers of the 20th century. His meticulously composed images of the American West are iconic and helped Adams to garner support for wilderness conservation. Adams was a staunch believer in unmanipulated images, termed straight photography, and founded Group f/64 with Edward Weston and Imogen Cunningham. Adams experimented with different techniques, exposures, and light in an effort to perfect his craft. He also helped to establish the photography department at Museum of Modern Art in New York and was awarded the Presidential Medal of Freedom in 1980 for his conservation efforts.