An imaging device comprises an interface for connecting an external recording device, a control circuit for controlling data communication with the external recording device connected to the interface, and an information storage. The control circuit comprises a connection establisher for realizing a connection established status with the external recording device, an information supplier for supplying the data management information stored in the information storage to the external recording device, and a connection canceller for canceling the connection established status before or at the time of setting the device main body to the electric power saving mode, after making the information supplier execute the data management information supply operation or after completion of the data management information supply operation by the information supplier.