Specialized and versatile, the EF 8-15mm f/4L Fisheye USM is a Canon L-series lens offering flexibility to a conventionally niche lens type. Capable of producing both circular and rectangular fisheye effects, this lens is characterized by its notable distortion and rounded image quality along with an immense 180' angle of view at the 8mm position. The optical design incorporates two ultra-low dispersion glass elements to limit chromatic aberrations and color fringing for high clarity and color accuracy, and a Sub Wavelength coating has also been applied to control flare and ghosting for greater contrast. Balancing the refined optics, this 8-15mm f/4 also sports a ring-type USM mechanism to enable quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed and has a protective fluorine coating on the exposed elements for use in trying environmental conditions. The Professional Kit Includes:1 x Canon EF 8-15mm f/4L Fisheye USM Lens1 x Lens Pouch Sleeve (for Medium Sized Lenses)1 x High Quality Dust Blower1 x Lens Pouch Sleeve (for Medium Sized Lenses)1 x Lens Pen Cleaner1 x Lens Cleaning Solution1 x Blower Brush1 x Lens Tissue Paper5 x Cotton Swabs1 x Wireless Universal Shutter Release Remote1 x 12-Inch Flexible Tripod1 Year Extended WarrantyCPS Worldwide Warranty Replaces Manufacturer Warranty1 x Lens Cap for EF 8-15mm f/4L Fisheye USM Lens 1 x Lens Dust Cap E (Rear) 1 x EW-77 Lens Hood for EF 8-15mm f/4L Fisheye USM Lens 1 x LP1219 Soft Lens Case