US Patent 10564392 Imaging apparatus and focus control method

An imaging apparatus includes: a distance measurement unit that measures distance values of a plurality of points in a first area which has a focus point as a reference point; a statistical unit that calculates statistics indicating a variation in the measured distance values of the plurality of points in the first area; a size determination unit that determines the size of a second area which has the focus point as a reference point, on the basis of the calculated statistics; a contrast evaluation value calculation unit that calculates a contrast evaluation value on the basis of an image of the second area; and a focusing unit that moves a focus lens to a lens position determined on the basis of the calculated contrast evaluation value.