Patent ID: 8774616

Claim:
An interchangeable lens mounted on a camera body in an exchangeable manner, the interchangeable lens comprising: an optical system in which a state of a subject light flux incident to the mounted camera body is adjustable by changing an optical state; a contact position detecting unit with a detection plane, which detects a contact state including a contact and a contact position of a finger of a photographer, to detect a contact position on the detection plane in an approximately same direction as an optical axis direction of the optical system, wherein the detection plane comprises a first area and a second area which are obtained by dividing the detection plane in approximately the same direction as the optical axis direction; and a lens controller to control an optical state of the optical system according to a contact state of the finger including the contact position detected by the contact position detecting unit, wherein the lens controller: sets an operational setting value according to an existence of a contact on the first area of the detection plane and a detection result on a contact position in the optical axis direction by the contact position detecting unit, and controls an optical state of the optical system according to the operational setting value; and sets an operation mode according to a detection result on an existence of a contact on the second area of the detection plane by the contact position detecting unit, and controls the contact position detecting unit such that the operational setting value corresponding to the set operation mode becomes configurable by a contact on the detection plane.