1. An image capture device comprising: an imaging optical system for forming an optical image of a subject; an image capture element for converting the formed optical image into an image signal; a feature detector unit for detecting features of a plurality of objects contained in an image represented by the image signal, based on the image signal obtained by the image capture element; a positional relationship detector unit for detecting a positional relationship of the features of the objects; and a composition change correction unit for correcting a change in a composition of the image based on a detection result of the positional relationship detector unit.