To take a ceremonial photograph including a user himself/herself in a theme park or the like, the user must hand to a third person a camera to ask the photographing. There is a system which can take a picture of a user when the user is in a predetermined position, but the user cannot confirm the picture when the user is being photographed. For the purposes, an image service system includes plural cameras connected to a network, an administration server for accumulating or distributing images taken by the cameras, and a client terminal for displaying the images taken by the cameras. The position of the user and the positions of surrounding cameras located within a predetermined distance from the client terminal are detected automatically. Images including the user can be displayed on the terminal.