An image capturing apparatus includes: an image sensor; a focus adjusting unit configured to adjust a focus state of the subject image; an acquisition unit configured to acquire luminance signals of colors from signals obtained from a plurality of unit focus detection areas; a normalization unit configured to normalize the acquired luminance signals of the colors of the unit focus detection areas; a calculation unit configured to calculate normalized focus evaluation values of the colors that indicate a focus state of the subject image; and a determination unit configured to determine a driving direction of the focus adjusting unit based on magnitude relations of a first normalized focus evaluation value that corresponds to a first color and a second normalized focus evaluation value that corresponds to a second color.