A control device for controlling a photographing system includes a detector configured to detect whether a support is mounted at the photographing system. The support is configured to support a lens mount to maintain a position of the lens mount relative to a main body of the photographing system. The photographing system further includes an image sensor and a support mechanism configured to rotatably support the lens mount and the image sensor. The control device further includes a controller configured to control the support mechanism to restrict a rotation of the lens mount and the image sensor in response to the detector detecting that the support is mounted at the photographing system.