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数字相机是光、机、电一体化的产品,它集成了影象信息的转换、存储、传输等部分,其中关键的部分是用电荷耦合器件(CCD)代替胶卷.影象信息由CCD进行光电转换后成为电信号,再经过模/数(A/D)转换,变成数字信号.数字信号可由数字相机内部的闪速存储器保存,也可由计算机保存和处理,有的数字相机还可接电视机观看.数字相机的光学镜头系统、电子快门系统、电子测光和传统相机基本相同,家用型数字相机与现在的“傻瓜”相机的外形和操作几乎完全一致,专业型数字相机(如DC42O)更是直接使用一些专业相机机身(如NIKON N90),直接使用从广角镜头到长焦距的各种F式镜头,有些专业型数字相机(如DC465)通过接口可连接到MAMIYA或其他高档相机上,使用户能够充分利用原来的设备和摄影技巧.由于专业型数字相机对光学和机械部分未作大改动,只将原来放置胶卷的地方用来放置CCD,并对相机的机背结构作了一些改动,熟悉传统摄影的用户可以在专业数字影象领域充分发挥自己的专长.
Digital camera is the integration of optical, mechanical and electrical products, which integrates the image information conversion, storage, transmission and other parts, the key part is the use of charge-coupled devices (CCD) instead of film. Image information by the CCD photoelectric Converted into electrical signals, and then through the A / D conversion, into a digital signal digital signal can be stored within the flash memory of the digital camera can also be saved and processed by the computer, and some digital cameras can also be connected to the TV Digital camera optical lens system, electronic shutter system, electronic metering and traditional camera is basically the same, the domestic digital camera and the current “fool” camera shape and operation are almost exactly the same, professional digital camera (such as the DC42O) But also direct use of some professional camera body (such as NIKON N90), directly from the wide-angle lens to the long focal length of the F lens, some professional digital camera (such as DC465) through the interface to connect to MAMIYA or other high-end cameras, Allowing users to take full advantage of the original equipment and photographic techniques.Because the professional digital camera on the optical and mechanical parts have not been greatly changed, only the place where the original film Place the CCD, and made some changes to the structure of the machine back camera, users familiar with traditional photography can give full play to their professional expertise in the field of digital image.