1. A camera setting device comprising: a person tracker, configured to detect at least one person from an image captured by a camera which images a subject and to track a detected person of the at least one person; a person interpreter, configured to: extract a number of face detections of the tracked detected person as store visitor information with respect to the tracked detected person, extract at least any one of a facing direction, a view angle and a movement route as the store visitor information with respect to the tracked detected person, and divide the captured image into small regions, and create the store visitor information for each small region; a camera installation condition estimator, configured to estimate whether an installation condition of the camera is appropriate based on the store visitor information which is extracted through the person interpreter, wherein: the camera installation condition estimator redivides the store visitor information for each small region into an upper side and a lower side of a captured image and estimates the installation condition of the camera based on a number of face detections of the tracked detected person in each region of the upper side and the lower side of the captured image, and the camera installation condition estimator presents an attention to cause the camera to be wider-angled than a current angle of the camera when the number of face detections of the tracked detected person in the upper side of the captured image is greater than that in the lower side thereof; and a presenter configured to present an attention to change a setting of the camera based on an estimation result of the camera installation condition estimator.