Fotodiox Lens Mount Adapter - M42 Type 1 Screw Mount SLR Lens to Canon EOS (EF, EF-S) Mount SLR Camera Body Mounts M42 Screw Mount (Pentax Takumar and Zeiss Lenses) SLR lenses to Canon EOS (EF, EF-S) Mount SLR Cameras High-tolerance precision craftsmanship; infinity focus or beyond allowed All-metal design; hardened anodized aluminum construction Premium grade Fotodiox adapter Limited 2-Year Manufacturer Warranty