Lens barrel, camera body, and imaging device

A camera body to which a lens barrel is detachably connected;

• (A) the lens barrel including:
• a lens barrel body that houses an imaging optical system including a focus lens;
• a first operation ring that is mounted on the lens barrel body so as to be endlessly rotatable about an optical axis of the imaging optical system;
• a second operation ring that is mounted on the lens barrel body so as to be rotatable about the optical axis in a limited angular range;
• a first sensor that detects a rotation of the first operation ring and a rotational direction and a rotation angle of the first operation ring;
• a second sensor that detects an angular position of the second operation ring;
• and
• a drive unit that moves the focus lens in a direction of the optical axis;
• wherein one of the lens barrel body and the second operation ring is provided with a distance scale and the other thereof is provided with an index,
• the drive unit moves the focus lens to a position, which corresponds to the distance scale set to a position of the index, on the basis of an output of the second sensor;
• (B) the camera body comprising:
• a control unit that controls the drive unit and allows a first manual focus mode in which the focus lens is moved according to the rotational direction and the rotation angle detected by the first sensor and a second manual focus mode in which the focus lens is moved according to the angular position detected by the second sensor to be selectively executed;
• an imaging unit that takes an image with light emitted from the lens barrel body;
• and
• a notification unit that notifies the generation of a difference equal to or larger than a certain level between the position of the focus lens and a position corresponding to the distance scale in a case in which the difference equal to or larger than a certain level is generated between the position of the focus lens and the position corresponding to the distance scale in the first manual focus mode.