A control apparatus includes at least one processor configured to execute instructions to function as a first controller that automatically adjusts a focus lens to a focusing position, a second controller that adjusts the focus lens on the basis of a user operation quantity, and a third controller that drives the focus lens. The first controller and the second controller effectively work in a first drive area of the focus lens. The first controller is disabled in a second drive area of the focus lens. The third controller drives the focus lens on the basis of changes of the second drive area.