Techart EF-FG01 Auto Focus Adapter For EF Mount Lens to for Fujifilm GFX Camera
This has nothing to do with our adapter. You may refer to this Sigma lenses on Fujifilm GFX guide prepared by Jeffrey Poon for more information. TECHART EF-GFX Adapter Autofocus Test. Initialization of Techart EF-GFX adapter.