Complex sentence: In the late 1920s uttenberg went to work for Paramount Pictures in New York then in 1934 signed on with MGM, moving to Hollywood where he was invited to join the American Society of Cinematographers.
Split into simpler sentences: In the late 1920s Ruttenberg went to work for Paramount Pictures in New York. Then in 1934 Ruttenberg signed on with MGM, moving to Hollywood where he was invited to join the American Society of Cinematographers.