1. An imaging device comprising: an image pickup device which picks up an object, an image acquisition device which continuously acquires image signals indicating the object via the image pickup device, a monitor which displays a through movie based on the acquired image signal, a face recognition device which continuously recognizes the face of the object at predetermined time intervals from the continuously acquired image signals, a tracking indication device which indicates to keep track of the face of the object, a prediction device which predicts the position of the face of the object after a user defined predetermined time elapsed since the tracking indication device indicated tracking based on a plurality of pieces of information about the position of the continuously recognized face of the object and the time intervals of recognizing the face, a notification device which notifies a user of the predicted position of the face of the object, the notification being displayed on the monitor before capturing a still image, a cancel indication device which cancels the indication of tracking by the tracking indication device, and a shutter control device which automatically releases the shutter to capture the still image after the predetermined time elapsed, in the case where the tracking indication is not canceled by the cancel indication device by the predetermined time elapsed since the tracking indication device indicated tracking.