Rokinon RK21M-E 21mm F1.4 ED AS UMC High Speed Wide Angle Lens for Sony (Black) Lens features Rokinon Ultra Multi-Coated (UMC) optical glass for sharp, clear images.Minimum focusing distance: 0.98f (0.3m) Ultra wide 21mm fixed focal length with aperture range f1.4-f22 Constructed of 8 lens elements in 7 lens groups Petal Shaped Lens Hood Uses filter size of 58mm and includes lens caps, lens pouch, instructional manual and 1 year Rokinon warranty