A range finding device comprising an image sensor and a measurement circuit that measures a distance to a predetermined position within a field of view of the image sensor based on time of flight of light, is disclosed. The range finding device generates data of a composite image of an image obtained by the image sensor and an image indicating a measurement result of the measurement circuit. The range finding device generates data of composite images for display and recording wherein the composite image for display and the composite image for recording differ from each other in a form and/or a composition position of the image indicating the measurement result.