Rokinon 8mm f3.5 AS IF MC CSII DH Fisheye Lens with Removable Hood for Olympus and Panasonic Micro 4/3 (MFT) Mount Digital Cameras (HD8M-MFT) Manual focus; Aperture range of F/3.5-22 10 Elements in 7 groups (1 spherical lens) Minimum focusing distance of 12 Inches Includes removable hood, lens caps, lens pouch and 1 year Rokinon warranty Features improved HD optics for sharper images