 "Canon Ef 24-70mm f2.8L II Usm Lens"@en
"Canon Ef 24-70mm f2.8L II Usm Lens

The all-purpose Canon EF 24-70mm f2.8L II USM Lens is a pro-spec, fast aperture zoom lens that's suitable for all areas of photography. The Canon EF 24-70mm f2.8L II USM lens features a new, redesigned optical system that includes two ultra-low dispersion (UD) and super UD aspheric elements to minimise colour aberration and ensure exceptional sharpness, even at the maximum 70mm focal length. Each lens element also features Canon’s optimised Super Spectra coatings to reduce ghosting and flare and ensure excellent colour balance. The lens features a compact and tough L series construction to protect the lens from knocks and bumps as well as against dust and moisture. "@en 
 "Canon EF 17-40mm f/4 L USM Lens"@en "Camera Lenses :: Canon Lens - Onestop Digital"@en
"A new and affordable L-series ultra-wide-angle zoom lens that's ideal for both film and digital SLRs. Superior optics are assured by the use of three aspherical lens elements  in addition to a Super UD (Ultra-low Dispersion) glass element. Optical coatings are optimized for use with digital cameras. This lens focuses as close as 11 inches (0.28m)  and offers both Canon's full-time manual focus and a powerful ring-type USM for fast and silent AF. It has a constant f4 maximum aperture  and offers the choice of screw-in 77mm filters or a holder in the rear of the lens for up to three gel filters. Finally  it offers weather-resistant construction similar to other high-end L-series lenses.  "@en 