The Fotodiox Pro Lens Mount Double Adapter lets you use 35mm SLR lenses such as Kodak retina rangefinder and retina reflex as well as Canon EOS EF and EF-S lenses with Fujifilm G-mount GFX cameras. It allows you to use infinity focus, and adjust the aperture manually via the integrated diaphragm control ring. You can choose the aperture priority and manual mode for setting the exposure. The adapter leaves no gap when fitted to the lens to prevent wiggling during adjustment. This Fotodiox adapter is durable thanks to the all-metal design and chrome-plated brass mount.