数码相机的光学成像系统与传统照相机有许多相同和不同之处，相同之处是两者均需要将被摄客观景物清晰地成像在光学系统焦平面后的平面上，并能通过足够的光通量达到曝光目的；不同之处在于数码相机由ＣＣＤ或ＣＭＯＳ取代了传统照相机的光化学乳胶片。因此，ＣＣＤ或ＣＭＯＳ? The optical imaging system of a digital camera has many of the same and different features as a conventional camera, with the difference that both require a clear imaging of the subject scene in the plane behind the focal plane of the optical system and with sufficient flux Exposure purposes; the difference is that the digital camera by the CCD or CMOS to replace the traditional camera photochemical emulsion film. Therefore, CCD or CMOS?