多次曝光

用照相机在同一张 感光片上进行两次以上的 曝光，常用于夜间摄影，如拍摄节日夜景、街市夜景等.高档的照相机上都有重拍按钮，当按下重拍按钮时，搬动 快门手柄时只上紧快门弹簧，而感光片不随之联动，仍处于原来的位置上.用多次曝光方法摄影，一定要用 三脚架将照相机固定在一定位置上，以免发生照相机位移， 底片上的影像错位的情况. Gan Guangpian the same one with the camera on more than twice the exposure, often at night photography, film festivals, such as night, night markets and so on. Remade on both high-end camera button, when pressed remade button, moving the shutter handle When the shutter is only tighten the spring, but were not accompanied by Gan Guangpian linkage is still in its original position. using multi-exposure method of photography, the camera must use a tripod will be fixed at a certain position, so as to avoid the camera displacement and dislocation images on film situation.