1. An imaging device comprising: a photography unit configured to capture a plurality of images; an acquisition unit configured to, for each of the plurality of images, identify a plurality of faces in the image, and calculate a degree-of-smile value for each of the identified plurality of faces; an evaluation unit configured to, for each of the plurality of images, calculate an evaluation value for the image based on a ratio of a number of the identified plurality of faces in the image having a degree-of-smile value of at least a predetermined threshold to a total number of the identified plurality of faces in the image; a recommendation unit configured to select a recommended image from the plurality of images by, when exactly one of the plurality of images has an evaluation value of at least a reference threshold, select the one image as the recommended image, and, when two or more of the plurality of images each have an evaluation value of at least the reference threshold, select one of the two or more images, for which the identified plurality of faces have a highest total degree-of-smile value, as the recommended image; and a display unit configured to simultaneously display the plurality of images, and display an object linked only to the recommended image such that the recommended image is distinguishable from the others of the plurality of images.