There are various conventional shots. These frame a person or an object at a certain size or intimacy. These are standardized and universally understood by relevant film crew members. The limits defining each shot are not exact and there are regional differences (USA, Europe) regarding their definition, not to mention when taking into account the personality of the filmic language of a Director or Cameraman (Cinematographer/DP). The important standard is its relation to the film's main theme: An establishing shot offers viewers an overview of the setting and an introduction to the scene, or shows the central person or object in total and in the context of the setting. All subsequent shots originate from this initial view. A Close-up Shot (CU) is a very intimate view where for example only the head and face of an actor is shown. See also Full Shot, Medium Shot, Extreme Close-up, Long shot and Extreme Long Shot.