The lens device and the vibration-proof adapter include a lock mechanism
with operational ease because a lock mechanism of a vibration-proof lens
has a switch on a joint with a camera main body or a joint with the lens
device. The lens device is connected by placing a hook, which is provided
on a front end face of a camera main body, to a recess of a back end face.
A slide pin is provided in the recess so as to slide, and is pressed
inside by the hook. In synchronization with the slide pin pressed inside,
a lock pin operates to move away from a holding member of a
vibration-proof lens, and the vibration-proof lens is unlocked. The slide
pin returns to an original protruding position to lock the vibration-proof
lens again when the hook is detached from the recess.
