Patent ID: 6999684

Claim:
A camera system which comprises: a lens apparatus which is provided with a image-taking optical system including a focusing lens; and a camera on which the lens apparatus is mounted, comprising: a first focus detection unit and a second focus detection unit which detect a focusing state of the image-taking optical system by methods different from each other; and a controller which controls driving of the focusing lens, the controller obtaining a target driving amount of the focusing lens based on a result of the detection by the first focus detection unit, and performing a first driving control to drive the focusing lens toward a position corresponding to the target driving amount and a second driving control to drive the focusing lens based on a result of the detection by the second focus detection unit, wherein the controller switches from the first driving control to the second driving control without stopping the focusing lens when a remaining driving amount to the target driving amount of the focusing lens by the first driving control becomes a predetermined amount.