| 摘要 |
An accessory that is detachably mounted to a camera body, includes: a first communication unit that communicates with the camera body using a first transmission line; a second communication unit that, when a predetermined condition is satisfied, communicates with the camera body by using the first transmission line and a second transmission line that is different from the first transmission line; and a changeover unit that, when the predetermined condition is satisfied, changes over communication with the camera body from communication by the first communication unit to communication by the second communication unit. |
