"Since film captures even the smallest gesture and magnifies it..., cinema demands a less flamboyant and stylized bodily performance from the actor than does the theater." "The performance of emotion is the most difficult aspect of film acting to master: ...the film actor must rely on subtle facial ticks, quivers, and tiny lifts of the eyebrow to create a believable character." Some theatre stars "...have made the theater-to-cinema transition quite successfully (Olivier, Glenn Close, and Julie Andrews, for instance), others have not..."