The Fotodiox Pro Lens Mount Double Adapter allows you fix Mamiya RB67 and RZ67 as well as Canon EOS EF and EF-S DSLR lenses to Fujifilm G-mount cameras. It has a focus ring with an infinity focus mark. You can adjust the aperture manually. The exposure is adjustable with two options: aperture priority and manual. For lenses not having an aperture ring, the adapter stops them down to the smallest f-stop value by default. The adapter offers a gapless fit when attached to the lens. Thanks to the all-metal design and chrome-plated brass mount, the adapter ensures functionality for a long time.