This research describes a new robot-photographer system which can interact with humans. The goal of this thesis is to make the system act like a human photographer. The system is based on a mobile robot having capabilities of wireless communication and stereo vision. It recognizes waving hands of people, moves toward them, and takes pictures with designated compositions. The pictures are transmitted to personal computers through wireless LAN. In comparison with previous research, the most unique things of this system are human interaction and user preference. To realize these properties, this new robot photographer system is considered optical property of lens and applied interesting vision algorithm which was never tried before in this kind of system.