A still image mode for recording still images or a moving image mode for recording moving images is sequentially judged as to whether or not communication with a remote control device has been disconnected (wireless connection status). When the disconnection of the communication with the remote control device is detected, the current imaging mode is automatically switched to an interval imaging mode with its base imaging mode such as a still image mode or a moving image mode being maintained. During the disconnection period, that is, until the re-establishment of the communication is detected, an operation of recording a still image or a moving image is repeated at predetermined time intervals.