An input apparatus reads a patient ID from an ID card and transmits it to a computer. On the basis of the patient ID, the computer obtains corresponding patient information containing a photograph of the patient's face and the patient's name, from a medical database, and then transmits the patient information to the digital camera together with the patient ID. The digital camera displays the patient information to enable confirmation of the patient to be photographed. After the patient has been confirmed, the patient ID is filled in a header part of an image file for the image photographed using the digital camera, and the image file is transmitted to the medical database or the like. Thus, the input of the identification information input before photographing and the subject to be photographed can be easily confirmed.