Rokinon RKHD8MV-N HD 8mm t/3.8 Fisheye Lens for Nikon with De-clicked Aperture and Removable HoodWide-Angle Lens 8mm ultra wide cine fisheye lens with 180 degrees angle of view feature declicked aperture for easy video shooting constructed of 10 elements for easy video shooting Features HD Optics and removable hood for clearer pictures optimal for shooting on full frame cameras Seamless aperture shifting from t3.8-t22