| 摘要 |
PROBLEM TO BE SOLVED: To provide a photographic lens by which a focusing state is highly accurately detected by optically adjusting the optical system for focusing state detection of the photographic lens. SOLUTION: A lens barrel part 110 for the focusing state detection is provided at the lens barrel part of the photographic lens. An imaging device for the focusing state detection is incorporated in the lens barrel part 110, so that a position thereof is adjusted by an operation ring 112. |
