Interchangeable lens, camera body and camera system for transmitting drive condition information at different frequencies

摘要

An interchangeable lens that is detachably mounted at a camera body includes: a photographic optical system that includes a first drive target member and a second drive target member, and a drive condition information transmission unit that transmits to the camera body first drive condition information to the drive condition of the first drive target member and second drive condition information to the drive condition of the second optical member. The drive condition information transmission unit transmits the first drive condition information with a first frequency and transmits the second drive condition information with a second frequency lower than the first frequency by attaching the second drive condition information to the first drive condition information.

主权项

1. An interchangeable lens that is detachably mounted at a camera body, comprising:
a photographic optical system that includes a first drive target member and a second drive target member, the first target member changing a first drive condition and the second target member changing a second drive condition; a drive condition information transmission unit that transmits to the camera body first drive condition information relating to the first drive condition and second drive condition information relating to the second drive condition; a transmission frequency information reception unit that receives from the camera body transmission frequency information indicating a transmission frequency, wherein: the drive condition information transmission unit transmits the first drive condition information at a first transmission frequency and transmits the second drive condition information at the transmission frequency indicated in the transmission frequency information as a second transmission frequency, the second transmission frequency being lower than the first transmission frequency, by attaching the second drive condition information to the first drive condition information, the drive condition information transmission unit transmits the first drive condition information and the second drive condition information to the camera body through a first transmission path at a first cycle, and the transmission frequency information reception unit receives the transmission frequency information from the camera body through a second transmission path at a second cycle the first transmission path being different from the second transmission path and the first cycle being different than the second cycle.