An exchangeable lens includes: a camera lens mount unit; a holding portion where twelve lens connector terminals, each connected to one of the twelve body connector terminals and each including a contact area to come into contact with one of the body connector terminals, are disposed; an optical system that includes a drive target member which can be driven; and a drive unit that drives the drive target member. A shape of at least one lens connector terminal among the twelve lens connector terminals is different from a shape of another lens connector terminal among the twelve lens connector terminals.