无码人妻一区二区三区麻豆_a级黄色视频_人妻无码综合麻豆_国产无码a

A professional camera is also called a single lens reflex camera, and a full camera is called a single lens reflex camera. The unique design of the reflectors and prisms of these cameras allows the photographer to view the image through the lens directly from the viewfinder. When light passes through the lens of the camera to the reflector, it refracts to the focus screen above and forms an image.