The EF 70-200mm f/2.8L IS III USM from Canon is an L-series. It provides a 112-320mm equivalent focal length range.
Canon EF-mount DSLRs Lens / Full-Frame Format, it provides a 112-320mm equivalent focal length range.
Aperture Range: f/2.8 to f/32 maximum aperture affords consistent performance throughout the zoom range.
One Fluorite Element and Five UD Elements for High Image Quality. It consists of 23 lens elements in 19 groups. Weather-resistant design protects the lens from dust and moisture to enable its use in inclement conditions and Optical Image Stabilizer.
Air Sphere Coating (ASC), which combines with updated Super Spectra Coatings to significantly reduce lens flare and ghosting. Focus Limiter switch lets you constrain the focusing to two different ranges to suit different applications: 3.9′-infinity or 8.2′-infinity.
Removable rotating tripod collar is included and benefits working with the lens atop a tripod or monopod.