Amazon.com : PENTAX 67 Lens Adapter 645 38454 : Camera Lens,Pentax 6x7 Mount Lenses to Mamiya 645 Mount Cameras - Pro,Pentax 645 SLR Lens to Micro Four Thirds (MFT, M4/3) Mount,Shift Lens Adapter - Pentax 645 Mount Lens to Sony E-Mount,Baveyes Pentax 645-Leica L 0.7x - KIPON