在当今电影业中，就记录载体而言最常用的是带有感光层的胶片素材——电影胶片。电影胶片包括从电影正片至电影拷贝中各种形式的系列电影素材胶片。带有本曝光的感光层的电影胶片可称为电影摄影胶片。当初所谓对幅面的术语界定可理解为仅指电影胶片的宽度，精确讲是指宽度的定 In today’s film industry, the most commonly used recording media is film material with a photosensitive layer, a motion picture film. Films include a wide range of motion picture films, from positives to cinematic copies. A motion picture film with the exposed photosensitive layer may be referred to as a cinematography film. The so-called definition of the terms of the format can be understood as only refers to the width of the film, in particular refers to the width of the set