在传统摄影中，胶卷既起感光成像的作用，又起信息存储的作用。而数字照相机相当于传统摄影中由胶卷完成的任务，要靠影像传感器和存储媒体来分担完成。自从数字照相机问世以来，摄影人士对数字照相机的影像传感器始终非常关注，而对影像存储媒体很少关注。实际上影像存储媒体 In traditional photography, the film plays the role of photographic imaging, but also plays the role of information storage. The digital camera is equivalent to the traditional photography by the film to complete the task, rely on image sensors and storage media to share. Since the advent of digital cameras, photographers have always been very concerned about the digital camera image sensor, and little attention to the image storage media. Actually image storage media