Hitchcock was known for his extensive storyboarding down to the finest detail of production. He was reported to have never even bothered looking through the viewfinder, since he didn’t need to do so. Looking at his storyboards versus the finial film it’s safe to say that is a vast overstatement.
Hitchcock trained as a draughtsman and worked in advertising before his first job in the film industry; designing title cards for silent films. Perhaps this influenced his pre-visual style. While he was an experienced illustrator he always hired a storyboard artist. These included legendary artists as Saul Bass, Harold Michelson, among others....(read more)
Storyboard source: The Hitchcock Wiki Text source: filmmakeriq