Ever since he convinced cinematographer Sławomir Idziak to cover the elaborate action sequences in “Black Hawk Down” with 11 cameras, Ridley Scott has been evolving a multi-camera style that is as creatively dynamic as it is economically sensible, capturing a maximum number of angles in a minimal amount of time. The benefits of Scott‘s approach are obvious in a set piece like the Austerlitz sequence in “Napoleon,” where he maintains a clarity of…