1. A digital camera having an image sensing device for sensing the image of a subject and outputting image data that represents the image of the subject, a setting device for setting a portrait photography mode, and an image processing device for subjecting image data that is output from the image sensing device to image processing, which is suited to portrait photography, in accordance with setting of the portrait photography mode by the setting device, the camera comprising: a correlation value calculating device for calculating a correlation value between a template image of a face and an image within an area in part of the image of the subject represented by the image data output from the image sensing device; a determination device for determining whether the image in said area is the image of a face based upon whether or not the correlation value calculated by said correlation value calculation device is greater than a threshold value; and a control device for controlling said determination device in response to setting of the portrait photography mode by said setting device in such a manner that the threshold value used in said determination device is made higher in comparison with a case where the portrait photography mode has not been set.