To provide a management method for image data convenient for an electronic camera to reproduce an image.

An imaging element 2 photoelectric-converts an object image into an image signal. An imaging processing section 3 applies processing to the image signal, which is fed to an analog/digital converter 4 from which a photographed image expressing the object image is outputted. A CPU 15 allows an image processing section 6 to generate a basic image from the photographed image and to record it on a removable recording medium 7. On the other hand, the CPU 15 allows the image processing section 6 to generate a simple image of which the number of pixels is less than that of the basic image from the photographed image or the basic image and allows an image recording section 14-2 to record the simple image in a flash memory 14. In this case, the number of the pixels of the simple image is decided on the basis of the number of pixels of the image able to be displayed on an LCD display device 13.