A digital camera stores image data, which represent object images captured via a taking lens and a charge coupled device, in a built-in memory, which is provided in a camera body and which is able to store image data of plural object images. When the built-in memory is filled with the image data, a memory card is inserted into a card slot so that the memory card connects to a card connector, and then the image data stored in the built-in memory are automatically transferred to the memory card. In this case, more than 1/3 of the memory card in the insertional direction is exposed, and hence the camera can be small-sized without being restricted by standards of the memory card.