An image capturing apparatus comprising: one imaging optical system; an image sensor which includes a left-eye light-receiving element and a right-eye light-receiving element, and outputs a left-eye captured image for left eye and a right-eye captured image for right eye upon receiving light beams having passed through the one imaging optical system; detection means for detecting a difference, between a left-eye captured image and a right-eye captured image output by the image sensor, of each of subjects included in the left-eye captured image and the right-eye captured image; control means for controlling focusing means of the imaging optical system to focus on a given subject included in the left-eye captured image and the right-eye captured image output by the image sensor, based on the difference of the given subject between the left-eye captured image and the right-eye captured image detected by the detection means; and creation means for creating sequential images for binocular stereopsis using images, each extracted from a region which includes the given subject and has a predetermined size, for each of a left-eye captured image and a right-eye captured image sequentially output by the image sensor, wherein the creation means is configured to create the sequential images by shifting the left-eye captured image with respect to the right-eye captured image or vice versa, so that the difference, between the left-eye captured image and the right-eye captured image output by the image sensor, of a still subject which is different from the given subject is held at actually zero over the sequential images, and the difference, between the left-eye captured image and the right-eye captured image output by the image sensor, for the given subject is different from zero. one imaging optical system; an image sensor which includes a left-eye light-receiving element and a right-eye light-receiving element, and outputs a left-eye captured image for left eye and a right-eye captured image for right eye upon receiving light beams having passed through the one imaging optical system; detection means for detecting a difference, between a left-eye captured image and a right-eye captured image output by the image sensor, of each of subjects included in the left-eye captured image and the right-eye captured image; control means for controlling focusing means of the imaging optical system to focus on a given subject included in the left-eye captured image and the right-eye captured image output by the image sensor, based on the difference of the given subject between the left-eye captured image and the right-eye captured image detected by the detection means; and creation means for creating sequential images for binocular stereopsis using images, each extracted from a region which includes the given subject and has a predetermined size, for each of a left-eye captured image and a right-eye captured image sequentially output by the image sensor, wherein the creation means is configured to create the sequential images by shifting the left-eye captured image with respect to the right-eye captured image or vice versa, so that the difference, between the left-eye captured image and the right-eye captured image output by the image sensor, of a still subject which is different from the given subject is held at actually zero over the sequential images, and the difference, between the left-eye captured image and the right-eye captured image output by the image sensor, for the given subject is different from zero.