Fotodiox Mount Adapter K lens mount lens Fujifilm GFX G mount with aperture PKa-GFX (Pentax (DA compatible) conversion) ring.

Model: PKa-GFX Genuine Japanese product Compatible lens mount: Pentax K (compatible with DA lenses) Compatible cameras: Fujifilm GFX, G-mount standard Features: Mount adapter, aperture ring included Mass: Approx. 145g The Fotodiox PKa-GFX is a mount conversion adapter that allows you to attach Pentax K (DA lens compatible) mount lenses to Fujifilm G mount cameras (such as the GFX100 and GFX50R).