Fotodiox Pro Lens Mount Adapter - M42 Type 1 (42mm x1 Screw Mount) Lens to Canon EOS (EF, EF-S) Mount SLR Camera Body Version 1 is for Pentax Takumar and Zeiss Lenses All Metal Design; Smooth surface for effortless mount Infinity Focus Allowed Accurate Flange to Focus distances 24 Month Manufacture Warranty