| 摘要 |
PROBLEM TO BE SOLVED: To provide optical equipment capable of updating an origin position with high accuracy without giving a feeling of discomfort to a user.SOLUTION: A lens device 2 including a lens CPU 204 that executes open-loop control of a stepping motor 202 for driving a third group lens barrel 201 updates, when passage through an origin is detected by an origin position sensor 207 if a speed at the time of the third group lens barrel 201 passing through the origin is smaller than a prescribed value, the origin stored in a memory 213 with a position of the third group lens barrel 201 at the time when it is read out of the origin position sensor 207, and does not update the origin stored in the memory 213 if the speed is the prescribed value or greater. |
