Looking at this picture, it does seem like the camera in OP’s picture is missing its lens. Also, the camera in OP’s picture is not actually pointing out of the window, so unless there is a different window, it’s likely that he’s not currently taking pictures, and is probably just setting the camera up. I suspect that the cameras were mounted somehow while they were in use, because otherwise they’d be super-awkward like the one in OP’s pic.