热久久国产欧美一区二区精品,韩国午夜理论在线观看,成在人线AV无码免观看,久久人妻一区二区三区,色综合久久夜色精品国产,久久精品国产亚洲精品2020,国产成人A在线观看网站站,久久天堂综合亚洲伊人HD妓女,巨胸喷奶水WWW视频网站,亚洲av自拍

Glass lens base B

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.

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. Through the eyepiece and pentaprism, the photographer can see the scene outside the picture window. When the shutter button is pressed, the mirror springs up and the shutter curtain in front opens simultaneously. The light through the lens (image) is projected onto the sensitive component (film in traditional cameras, CCD or CMOS in digital cameras) to sensitized it