DescriptionSolid metal mount lens adapter allowsPk645 Pentax 645 mount lens to be used on S0ny NEX E mount camera body.Focus to infinityMeter exposure functionsLens lock / release and stop screwThere is no ROM connection on the ring so diaphragm control of the lens is set manuallyIt is possible to use macro rings and other accessoriesInstall, remove and operate lens smoothlyFine finishing, made of brass and aluminum Notes:Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other function will not operate correctly while using this adapter.In this case, "Stop-down mode" will need to be used when metering since the lens doesn't have the ability to have its aperture controlled by camera body. You can shoot with manual mode or aperture priority mode.Compatible:1. AllPk645 Pentax 645Mount Lenses2. All S0ny NEX E Mount camera. Such as NEX-C3, NEX-F3, NEX-3, NEX-3N, NEX-5, NEX-5R, NEX-5T, NEX-6, NEX-7, Alpha A7, A7 II, A7r, A5100, A7s, A3000, A5000, A6000, etc Package included:1 x Lens Adapter