Fotodiox Lens Mount Adapter - M42 Screw Mount SLR Lens to Olympus 4/3 (OM4/3 or 4/3) Mount Mirrorless Camera Adapter to Olympus 4/3 (OM4/3 or 4/3) Mount Mirrorless Camera Body Premium-grade Fotodiox adapter All metal design with smooth surface for effortless mount Infinity focus allowed Accurate flange to focus distance 24 month manufacturer warranty