While attending Stanford University in 1912, Bert Glennon was hired as an assistant cameraman, and, upon graduation, went into the film business full-time. Becoming a director of photography in 1916, Glennon became one of the industry's most respected craftsmen and worked often for such perfectionist directors as John Ford and Cecil B. DeMille. His success as a cinematographer didn't carry over to his attempts at directing, however; the few films he directed from 1928 to 1932 were increasingly mediocre, and he gave up his attempts at directing to resume his distinguished cinematography career, where he stayed until his retirement in 1963.