单镜头相机是一种很精密的机器,虽然操作很容易,但是其中包含了上千个组件。利用单镜头相机来拍照时,首先必须要透过观景窗对准镜头的焦距,而自动对焦相机则能够自动对焦;第二是调整光圈口径的大小来控制光线进入相机的多少,光圈越大,进入的光线就越多;第三是调 The single-lens camera is a very sophisticated machine that contains thousands of components, although it’s easy to operate. The use of single-lens camera to take pictures, you must first through the viewing window at the lens focal length, and autofocus camera is able to automatically focus; the second is to adjust the aperture size to control the amount of light into the camera, the larger the aperture , The more light you enter; the third is tone