Patent ID: 8600225

Claim:
An electronic device connectable to a camera main body and having an actuator, the electronic device comprising: a detection terminal adapted to come into contact with a first terminal used by the camera main body to detect connection to the electronic device when the electronic device is connected to the camera main body; a power terminal to come into contact with a second terminal used by the camera main body to transfer power to the electronic device when the electronic device is connected to the camera main body; a detection section adapted to detect the voltage of the detection terminal; a connection detection section adapted to detect the connection status to the camera main body based on the change in the voltage detected by the detection section; and a control section adapted to control the operation of the actuator based on one of the connection to and the disconnection from the camera main body detected by the connection detection section, in which the electronic device is a replacement lens and the actuator drives a lens of the replacement lens, in which the detection terminal and the power terminal are separate from each other, and in which the connection detection section detects the connection status to the camera main body based on the change in the voltage of the detection terminal detected by the detection section such that the connection status is not based on a connection of the power terminal to the second terminal.