An image-taking apparatus is disclosed, which is capable of blocking inversely-entering light from an optical viewfinder in an EVF mode. The image-taking apparatus comprises a viewfinder optical system; a mirror unit being driven between a first state in which the mirror unit reflects the light flux toward the viewfinder optical system and a second state in which the mirror unit transmits the light flux toward the image-pickup device; a viewfinder shutter opening and closing a viewfinder optical path; and a controller controlling the drive of the mirror unit. The controller drives the mirror unit to the first state in accordance with an open-side-operation of the operation member, and drives the mirror unit to the second state in accordance with a close-side-operation of the operation member.