The canon ef 14mm f28 l ii usm lens is exacting professionals ultra wide angle lens and uses ud and aspherical elements for paramount image quality and sharpness across frame thanks to its maximum f28 aperture lens ensures great low light performance lens features an integral lens hood and is designed to prevent unwanted stray light from entering lens ef14mm lens is a specialised professional l series lens and offers an impressive 114 angle of view when being used on a full frame