Former camera operator who graduated to cinematographer in the mid-1940s. Unsworth demonstrated a deft command of black-and-white in films such the documentary-like "A Night to Remember" (1958) but was chiefly noted for his lush color work, particularly on period films. Unsworth won a British Film Academy award (Stella) for "Becket" (1964) and, in addition to shooting "2001: A Space Odyssey" (1968), is credited with helping devise some of its ground-breaking special effects. Unsworth's other outstanding credits include "Cabaret" (1973), for which he won his first Oscar, and Roman Polanski's sumptuous "Tess" (1979), during the production of which he died of a heart attack. His Oscar for "Tess" was shared with Ghislain Cloquet.