Racking Focus over Books (Stock Footage)

Racking Focus over Books (Stock Footage)

A short depth racking focus over a book shelf at the municipal library. A rack focus in filmmaking and television production is the practice of changing the focus of the lens during a shot. The term can refer to small or large changes of focus. If the focus is shallow, then the technique becomes more noticeable. In professional films, a camera assistant called a focus puller is responsible for rack focusing.

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