Leading Hollywood craftsman, responsible for some fine films of the 1930s and 40s, but whose later output tended toward the over-ambitious and excessive.The son of performers, Stevens entered films at age 17 as a cameraman and later worked for the Hal Roach company, where he directed his first shorts. He joined RKO in 1934 and proceeded to churn out a series of crafty comedies and light musicals, scoring his first major success with "Alice Adams" (1935), which was followed by the Astaire-Rogers classic "Swing Time" (1936), the action-packed "Gunga Din" and the brilliantly realized debut