A development server for more easily creating an image having a quality of image matching the desire and preference of the user from image data such as RAW data from which the user cannot develop. A development server (120) comprises a RAW receiving section (122) for receiving undeveloped image data, a temporarily-developed image creating section (124) for creating temporarily-developed images by simply developing undeveloped image data by applying correction parameters corresponding to respective mutually different qualities of image, a temporarily-developed image transmitting section (125) for combining temporarily-developed images with corresponding correction parameters applied to the respective temporarily-developed images and transmitting them to a development client (110), a correction parameter receiving section (126) for receiving a correction parameter applied to one of the temporarily-developed images from the development client (110) as an instruction to develop undeveloped image data, and a digital picture developing section (127) for creating developed image data by developing the undeveloped image data by applying the correction parameter specified by the development instruction.