Canon EF 70-300mm f/4-5.6L IS USM Lens OverviewSpanning a flexible range of telephoto focal lengths, the EF 70-300mm f/4-5.6L IS USM is a Canon L-series lens characterized by its relatively compact size and versatility. Two ultra-low dispersion elements are used to greatly reduce color fringing and chromatic aberrations throughout the zoom range for high clarity and color accuracy, and a Super Spectra coating has also been applied to suppress flare and ghosting for improved contrast. Also, a floating elements mechanism is employed to maintain consistent image quality throughout the focusing range for notable sharpness from 3.9' to infinity.What's In The BoxEF-Mount Lens/Full-Frame FormatAperture Range: f/4 to f/45Two Ultra-Low Dispersion ElementsSuper Spectra and Fluorine CoatingsRing-Type Ultrasonic Motor AF SystemOptical Image StabilizerFloating Focusing MechanismWeather-Sealed ConstructionRounded 8-Blade DiaphragmExtra Bundle Items:Lens Pen Cleaner (Has Felt Tip and Brush Tip - Must Have!)Dust BlowerLens Cleaning SolutionLens Cap KeeperSoft Lens Pouch2 Year Extended Warranty Included (Replaces Manufacturer Warranty)