“Many directors prefer digital cameras because of their speed and portability. Boyle's director of photography, Anthony Dod Mantle, went on to win a Best Cinematography Oscar for Slumdog Millionaire, the first digital motion picture to do so. He refused to take cumbersome 35mm film cameras into the Mumbai slums, opting for smaller, lightweight digital equipment to capture the place's bustling urgency and flow. The constraints of film, however, force artists to master their craft. An old-school cinematographer like Freddie Young, for instance, could shoot on a film camera with no digital monitor to check his progress — and walk out at the end with Lawrence of Arabia. No wonder, then, that directors like Christopher Nolan worry that if 35mm film dies, so will the gold standard of how movies are made. Film cameras require reloading every 10 minutes. They teach discipline. Digital cameras can shoot far longer, much to the dismay of actors like Robert Downey Jr. — who, rumor has it, protests by leaving bottles of urine on set.”