The image processing apparatus of the present invention comprises an image acquisition device that acquires image data from an image recording device on which the image data was recorded, a date and time information reading device that reads date and time information of the image data, an image display device that displays a reproduced image of the image data, an image selection device that selects image data displayed on the image display device, and an image data processing device that, based on the date and time information that was acquired by the date and time information reading device, performs predetermined processing on the reproduced image in accordance with a period of elapsed time since the date and time that the image data was captured.