亚洲 一区二区 在线,综合偷自拍亚洲乱中文字幕,国产精品福利自产拍久久,五月丁香啪啪,亚洲中文字幕一区二区,公天天吃我奶躁我的在线观看,午夜福利在线观看6080,男女激情一区二区三区,大陆精大陆国产国语精品,亚洲成人av综合一区

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