Rokinon 10mm T3.1 Cine Lens - Micro Four Thirds Fit for Micro 4/3 Mount Cameras has been specifically designed for video use with Olympus and Panasonic Micro 4/3 mirror less cameras. It utilises a Nano Crystal Anti-Reflection Coating System, Aspherical Lens Elements and Extra Low Dispersion Glass to provide a high performance frame filling ultra wide view equivalent to 20mm on a full frame camera.