| 摘要 |
PROBLEM TO BE SOLVED: To provide an interchangeable lens that enables a drive of an optimum focus lens, and to provide a camera system that is provided with the interchangeable lens.SOLUTION: The interchangeable lens has: an imaging optical system that includes first and second focus lenses independently movable in an optical axis direction for a focus adjustment; lens position detection means that detects positions of the first and second focus lenses on the optical axis; lens drive amount computation means that, when receiving an instruction of a drive amount of the focus lens from a body side upon adjusting a focus of the imaging optical system, determines drive amounts of the first and second focus lenses, respectively from the instructed drive amount and positions of the first and second lenses in order to attain a movement amount of an imaging plane corresponding to the instructed drive amount; lens drive means that drives the first and second focus lenses; distance computation means that computes a photographing distance to a subject; and display means that displays the photographing distance calculated by the distance computation means. |
