1. An image capturing apparatus comprising: an obtaining unit configured to sequentially obtain images obtained by image capturing of a subject; a selection unit configured to sequentially select a plurality of images, of the images obtained by said obtaining unit, which are used to generate one frame; and a generation unit configured to combine the plurality of images selected by said selection unit and generate a moving image including an obtained composite image as a frame, wherein if the plurality of images differ in angle of view at the time of image capturing, said generation unit changes all the plurality of images into images having the same angle of view and the same number of pixels by adjusting angles of view of images which differ in angle of view from one reference image, as a reference, of the plurality of images, and combines the images.