Abstract: A camera of the type having interchangeable taking lenses with different focal lengths includes a lens cover with an opening formed therein for allowing light rays to enter a selected taking lens, and an optical path establishing member which can pivotally move in order to establish an optical path for either one of the interchangeable taking lenses, thereby to permit the choice of a taking lens suitable for an object to be photographed. The lens cover is manually moved in order to align the opening with either one of the interchangeable taking lenses or to cover and protect them; and this movement operates the optical path establishing member so as to cause it to establish the proper optical path for the taking lens with which the opening of the lens cover is aligned.