SUBJECT SELECTION DEVICE AND IN-FOCUS PORTION INDICATING DEVICE

A subject selection device comprises a light source and an imaging device, such as a CCD, having a plurality of photo-diodes. The light source radiates a distance measuring light beam toward a plurality of objects. A reflected light beam, generated by the objects due to the distance measuring light beam, is received by the, photo-diodes. A signal charge is integrated in each of the photo-diodes, so that three-dimensional information, which includes distances from the camera to each point on a surface of the objects, is obtained. A histogram indicating a distribution of the distances is generated. Based on a peak value of the histogram, a subject to be photographed is selected from the objects. An in-focus portion indicating device indicates a portion of the subject, which is in focus, based on the peak value.