Canon EF 70–200mm lens The EF 70-200mm lens is a telephoto zoom lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras. The lens comes in four different versions. All four have a constant maximum aperture over the whole focal range and all four are L-series lenses. f/2.8L IS USM f/2.8L USM f/4L IS USM f/4L USM All four lenses have an excellent reputation for providing optical quality comparable to various prime lenses at all focal lengths in the zoom range. The f/4 IS version has been tested as the finest zoom lens Canon has produced for its EF lineup, from an optical quality standpoint. The f/4 non-IS version, the most inexpensive L-series lens that Canon makes, is popular among weight-sensitive landscape photographers and hobbyists who want L quality without spending thousands of dollars, while the f/2.8 versions are popular among event and portrait photographers and photo-journalists. The IS-equipped lenses use circular-bladed diaphragms which maintain a nearly circular aperture when stopped down by up to two stops. They are also sealed against dust and water when coupled with one of Canon's weather sealed DSLR cameras. These lenses are compatible with the Canon Extender EF teleconverters. Read Reviews Compare Prices Similar Lenses Write a Review

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