在风光、建筑和产品等题材的摄影中,摄影师往往需要拍摄一张由近到远、从左至右都清晰的照片。1894年奥地利陆军上尉泰德-莎姆弗鲁格(1865-1911)发现景物平面,镜头平面及胶片平面三面集于一线时从远到近的景物都能够清晰成像,摆动胶片平面能改变影像透视的规律,并以他的名字命名为”莎姆定律”。最初他用此定律来校正固定式相机所拍的航空测绘照 Photographers often need to take a picture from near to far, from left to right, in photography of scenery, architecture and products. In 1894 Austrian captain Ted Shamfurger (1865-1911) found that the scenery plane, the lens plane and the film plane set in a line from far to near the scene can be clearly imaged, swing the film plane can change the image perspective The law, and under his name as “Samu’s Law.” At first, he used this law to calibrate the aerial mapping shot by a stationary camera