Matte: An opaque outline that limits the exposed area of a picture, either a cut out object in front of the camera or as a silhouette on another strip of film.

• 挡板，遮板：限制画面曝光范围的不透明轮廓，既可以是摄影机前的一个遮光物体，也可以是其它胶片上的画幅遮片。