The present invention provides a portable image capturing apparatus having also a navigation function while preventing increase in the size and manufacturing cost of the apparatus. As a part for displaying a guide screen of a navigation system, a rear LCD capable of displaying a high-definition image of an image capturing apparatus which can be carried by a user is used. In other words, a part in which a display of a car navigation system is formed can be separated from the car navigation system and used as a digital camera. Therefore, only by connecting the image capturing apparatus to a car navigation system body in a data transmittable/receivable manner without providing most of functions necessary for car navigation for the image capturing apparatus, the car navigation system is formed.