Made of durable metal, The KIPO Lens Mount Adapter for Contax 645 Lens to Canon EF-Mount Cameras is an autofocus adapter that allows Contax 645 medium format lenses to be used on Canon EOS DSLR series camera bodies.
The adapter features accurate and quick autofocus and has electronic contacts and a built-in circuit board with a chip. With the KIPON adapter, you can control the aperture with the camera body.