The digital camera comprises a photoelectric conversion part configured to perform a photoelectric conversion of a field image and output a first image signal, a first processing part configured to perform a first signal processing of the image signal and output a second image signal, an encoding part configured to encode the second image signal and output a third image signal, a second processing part configured to perform a second signal processing to the second image signal and output a fourth image signal, a first memory configured to memorize a customer ID information, a code key used in the encoding part, and the third image signal, and a second memory configured to memorize the fourth image signal.