[1] After completing Tom Sawyer for Paramount Pictures in 1930, he continued working at the studio for more than twenty years.

The style of lighting he introduced in A Farewell to Arms became heavily identified with all of Paramount's films during the 1930s and 1940s,[1] though he occasionally worked for other studios, for instance on The Ghost and Mrs. Muir (1947).

[1] His credits include The Big Heat (1953) with Glenn Ford and Lee Marvin, Sabrina (1954) with Humphrey Bogart and William Holden, Gunfight at the O.K.

Corral (1957) with Burt Lancaster and Kirk Douglas, The Matchmaker (1958), Some Like It Hot (1959) with Marilyn Monroe and Jack Lemmon, The Magnificent Seven (1960) with Steve McQueen, One-Eyed Jacks (1961) with Marlon Brando, How the West Was Won (1962) in Cinerama, Charade (1963) with Cary Grant and Audrey Hepburn, Bob & Carol & Ted & Alice (1969), and Butterflies Are Free (1972).

Lang received a Lifetime Achievement Award from the American Society of Cinematographers in 1991, for a career which included at least 114 feature films.