rokinon Rokinon 12mm F2.0 Ultra Wide Angle Lens for Sony E-Mount (NEX) Black Mirrorless Written by admin on November 20th, 2023. Made just for mirrorless mounts is the new Rokinon 12mm f/2.0 NCS CS lens. It is available in Canon EF-M, Fujifilm X, Samsung NX, Sony E and Micro Four Thirds mounts. 12mm F2.0 Ultra Wide Angle Lens.