Camera system and camera

A camera comprising:

• a first focus detection unit and a second focus detection unit which detect a focusing state of a image-taking optical system including a focusing lens, by methods different from each other;
• and
• a controller which controls driving of the focusing lens, the controller calculating 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 when a remaining driving amount to the target driving amount of the focusing lens by the first driving control becomes a predetermined amount.

A lens apparatus which can be attachable to a camera comprising a first focus detection unit and a second focus detection unit which detect a focusing state of a image-taking optical system by methods different from each other, comprising:

• the image-taking optical system which includes a focusing lens;
• and
• a controller which controls driving of the focusing lens based on information obtained from the camera, the controller performing a first driving control to drive the focusing lens toward a position corresponding to a target driving amount of the focusing lens calculated in the camera based on a result of the detection by the first focus detection unit 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 when a remaining driving amount to the target driving amount of the focusing lens by the first driving control becomes a predetermined amount.