Management of files stored on an image capturing unit such as a digital camera, includes detection of connection of the image capturing unit, reception of plural image data respectively corresponding to plural images stored in the image capturing unit, and storage of the plural received image data in a storage medium. A setting screen is displayed for storage settings, wherein the setting screen includes a first region for inputting a character string for a file name and a second region for setting a number. A file name is assigned to each one of the plural image data, the assigned file name including the inputted character string and a number sequentially assigned to the plural image data, the numbers starting from the number set in the second region. Each such one of the plural received image data is stored in the storage medium with the assigned file name.