The zoom<\/a>, of course, requires a telescopic lens to magnify the image. The camera is static so there won\u2019t be any perspective changes. You can move the camera while zooming, a notable effect being the Hitchcock<\/a> shot (a.k.a. the dolly zoom<\/a>), but let\u2019s focus on a static camera for this article.<\/p>\n At its most basic, a zoom allows us to redirect and focus our audience\u2019s attention within a single shot. A great example is the crash-zoom, often used in Hong Kong action cinema, and films harkening back to it. It emphasizes an action, introduces an imposing character, or adds weight to a character\u2019s mood or emotion. Note its use in introducing Calvin Candy in Django Unchained<\/a>.<\/em><\/p>\n