In an imaging apparatus according to an aspect of the present invention, the light-shielding member performing light shielding so that the light beam passing through the second region does not enter the first light-receiving element is provided only to the first light-receiving element. That is, no light-shielding member is provided to the second light-receiving element. Therefore, the number and types of light-shielding members can be reduced, and pupil division can be performed with a simple structure. Also, various products can be easily supported.