Thank you for viewing. This is a mount adapter for converting Arriflex (ARRI-S / ARRI-B) mount lenses to PL mount. It's a convenient part for those who want to use professional cine lenses (such as old Arri-B / Arri-S series) with PL mount, or for those who want to incorporate and utilize old lens assets in existing PL mount systems. Due to the rear element protrusion of the lens and individual lens specifications, infinity focus may not be achieved, or the rear element may interfere. Please check if it works with your lenses before purchasing. #PLmount #MicroFourThirds #m43 #mft #mountadapter #cinelens #cinemalens #oldlens #bmpcc #lumix #panasonic #videocamera #photographicequipment #olympus #Olympus #angenieux #cooke