Fringer EF to GFX Lens Adapter
This Fringer EF Mount Lens to FUJIFILM GFX Camera Auto Adapter allows for routing and using a Canon EF mount lens on a Fujifilm GFX camera. Electronic communication between an attached camera and lens is supported, enabling image stabilization, autofocus, as well as auto exposure features. The adapter has an electronic aperture ring featuring 1/3-stop steps.
I use this adapter with the Canon EF 100-400mm f/4.5-5.6 L IS II USM lens when I need more "reach" than what I can get with the GF 100-200mm f/5.6 lens.