面对优美的自然环境,摄影师都希望用手中的相机将其真实自然地记录下来。可是由于曝光控制得不恰当,使得原来场景中的丰富多彩的画面细节和层次丢失了不少,其原因主要是对景物的曝光过度或曝光不足。为了获得与原景物相似的画面,就需要对曝光量进行一定的控制,使胶片获得适宜的曝光。 Face the beautiful natural environment, photographers want to use the camera in the hands of its real and natural record. However, due to inappropriate exposure control, making the original scenes of the rich details of the picture and the level of a lot of lost, the main reason is the scene of the overexposed or underexposed. In order to obtain a picture similar to the original scene, it is necessary to control the amount of exposure so that the film is properly exposed.