In High-Def Shift, Are Studios Blurring The Picture?

July 11, 2012 Warner Studios in Burbank, Calif., is a piece of American film history — remnants of sets from classics dot the lot: Casablanca, The Music Man, Tea for Two. Then there’s the vault where film history lives.   For preservation purposes, the room is kept at a cool 38 degrees. Movable shelves stacked with thousands of steel film cases line the walls of the archive with movies and TV shows that go back as far as 1916. Many are major pieces of American film history — for example, the original camera negative of Rebel Without a Cause.