多重曝光多重曝光(又称多次曝光),是一种特殊的拍摄技术。原理就是在一幅画面上,分两次或者更多次的曝光使每次的成像叠加到一起,拍摄出双影或多影画面,来表现一张普通画面难以表现的效果(图1)。其实,多重曝光功能是胶片相机时代的产物,在传统的胶片单反相机中,按一下快门即拍摄一张,再按一次快门,就开始拍 Multiple exposure Multiple exposure (also known as multiple exposure), is a special shooting technique. The principle is that in one frame, two or more exposures are used to superimpose each of the images together to produce a double-shadow or multiple-shadow frame to show the effect of a normal picture (Fig. 1). In fact, multiple exposure function is the product of the era of film cameras, in the traditional film SLR camera, click the shutter that is shot one, and then press the shutter to start