1. An image compositing apparatus provided with a fare adjustment function, which takes a picture of a subject, composites a foreground (subject) image of the picture with a background image, and prints out the composite image with a printer, the apparatus comprising: light panels provided behind the subject and on the floor, which uniformly emit uniform light with predetermined hue, saturation and brightness; a means for measuring the hue, saturation and the brightness of the light panels provided behind the subject and on the floor; a memory for memorizing the hue, saturation and the brightness of the light panels provided behind the subject and on the floor; an image extracting means for extracting the foreground image of the picture based on a color of a light panel behind the subject; an image compositing means for comparing and correcting saturation, brightness and hue distributions of the foreground image with respect to saturation, brightness and hue distributions of the background image, and compositing the foreground image with the background image; and an image display for displaying the resultant composite image.