Canon EF 8-15mm f/4L Fisheye USM Lens

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 degrees 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

Features: Two Ultra-Low Dispersion Elements, Aperture Range: f/4 to f/22, EF-Mount Lens/Full-Frame Format, Sub Wavelength and Fluorine Coatings, Ring-Type Ultrasonic Motor AF System, 180° Angle of View, Weather-Sealed Construction, Rounded 7-Blade Diaphragm

Focal Length: 8 to 15mm

Maximum Aperture: f/4

Minimum Aperture: f/22

Lens Mount: Canon EF

Lens Format Coverage: Full-Frame

Angle of View: 180° to 175° 30'

Minimum Focus Distance: 5.91-inch / 15 cm

Maximum Magnification: 0.34x

Optical Design: 14 Elements in 11 Groups

Diaphragm Blades: 7 - Rounded

Focus Type: Autofocus

Image Stabilization: No

Filter Size: Gel Filter (Rear)

Dimensions (ø x L): 3.09 x 3.27-inch / 78.5 x 83 mm

Length at Maximum Extension: 3.39-inch / 86 mm

Weight: 1.19 lb / 540 g