An endoscope apparatus includes: an image acquisition section that acquires a plurality of in vivo images that were obtained by capturing an in vivo object using an imaging optical system； an in-focus evaluation value calculation section (contrast value calculation section 336) that calculates an in-focus evaluation value corresponding to each of the plurality of in vivo images； a focus control section (lens position control section 320) that controls a focus operation of the imaging optical system based on the in-focus evaluation value； and a freeze image setting section (337) that selects at least one in vivo image from the plurality of in vivo images based on the degree of in-focus represented by the in-focus evaluation value, and sets the selected at least one in vivo image to be a freeze image.
