BNeewer AF confirm Adapter for Pentax K PK Lens to Canon EOS EF Mount Camera 7D 60D 5DII 600DRebel T3i 550DDigital Rebel T2i ReviewbP PP Neewer AF confirm Adapter for Pentax K PK Lens to Canon EOS EF Mount Camera 7D 60D 5DII 600DRebel T3i 550DDigital Rebel T2i PWith AF-Confirm Chip.EXIF is fixed 50mm f1.4.PSupports AV (Aperture Priority) and Manual Mode.fixed a bug of focus on EOS 60D, 550D, 7D, 5DII,and reprinted contacts.PMake Pentax K PK mount lenses can be used on Canon EOS EF camera body.It is a aperture pin stop down flange version.PIt is possible to use Macro rings and other accessories.It can focusing infinite.PMaterial: Chrome-plated Brass.