Neewer AF confirm Adapter for Pentax K PK Lens to Canon EOS EF Mount Camera 7D 60D 5DII 600D/Rebel T3i 550D/Digital Rebel T2i Reviewhttp://tinyurl.com/pfob4ym Neewer AF confirm Adapter for Pentax K PK Lens to Canon EOS EF Mount Camera 7D 60D 5DII 600D/Rebel T3i 550D/Digital Rebel T2i With AF-Confirm Chip.EXIF is fixed 50mm f1.4.Supports AV (Aperture Priority) and Manual Mode.fixed a bug of focus on EOS 60D, 550D, 7D, 5DII,and reprinted contacts.Make Pentax K PK mount lenses can be used on Canon EOS EF camera body.It is a aperture pin stop down flange version.It is possible to use Macro rings and other accessories.It can focusing infinite.Material: Chrome-plated Brass.Color : Silver