Rokinon HD8M-C 8mm f/3.5 HD Fisheye Lens with Removeable Hood for Canon DSLR 8-8mm, Fixed-Non-Zoom Lens Ultra wide-angle 8mm fisheye lens with exaggerated perspective for dramatic effects; Manual focus Ultra-wide 167 diagonal field-of-view for APS-C size image formats will produce a rounded image that doesn't cover the entire frame when used with compatible full frame digital cameras or 35mm film cameras Lens is constructed with hybrid aspherical elements for outstanding, sharply defined images; Lens has a minimum focusing distance of 12" (30.48 cm) for enhanced close-up shots Features improved HD optics for the sharper images; Lens features super multi-layer coating to reduce flare and ghost images Aperture Range: F3.5 to F22, Minimum Focusing Distance: 11.8(0.3m), Filter Size: 67mm Number of Diaphragm Blades: 6; Optical Construction: 10 Glass Elements In 7 Groups