1. An image capturing apparatus comprising: a light intensity distribution acquirer configured to acquire a light intensity distribution in an object space through image capturing using a plurality of pixels; a coefficient distribution setter configured to set a coefficient distribution that is a distribution of a coefficient corresponding to each of the plurality of pixels and is to be applied to the light intensity distribution, such that the coefficient distribution is different for each image capturing condition; an information acquirer configured to acquire object space information that is information on the object space and different from the light intensity distribution; a pixel group setter configured to set a first pixel group and a second pixel group that are different from each other in the plurality of pixels, based on the object space information; and an image generator configured to generate a combined image by combining a plurality of light intensity distributions obtained by applying the coefficient distribution to each of a plurality of light intensity distributions obtained on a plurality of image capturing conditions, wherein the coefficient distribution setter sets a first coefficient distribution as at least one of the plurality of coefficient distributions applied to each of the plurality of light intensity distributions, such that fundamental statistics of the coefficient distribution for the first pixel group is different from that for the second pixel group in the first coefficient distribution.