XPimage Locking Adapter for EF Mount Lens to Fujifilm GFX 50S 100SII 50R Camera
For Lens Mount: EF mount (Cano EF, Zeiss EF, Sigma EF, Tamron EF, SamYang EF ). After the lens is installed on the locking adapter ring, it is more compact and stable. Rotate the locking ring to LOCK direction.