Multi-jaw clamp

The field of the present invention relates to a clamp for attaching a device to a cylindrical object. In particular, the invention relates to a clamp for attaching a filter and matte box assembly to the iris rods of a motion picture or video camera. A multi-jaw clamp capable of attaching to various sized cylindrical objects such as iris rods of a professional movie camera. The multi-jaw clamp includes two housings that each hold a cylinder with at least two circular sections in the sides of the cylinders that are rotatable to change the size of the circular opening for the circular object to which the clamp can attach. The two housings contain hinge means for opening and closing the clamp and at each free end of the housings is a means for closing the clamp and locking the clamp in position around the cylindrical object.