Canon EF 70-200mm f/4 L IS USM Lens for Canon Digital SLR Cameras

70-200mm telephoto zoom lens with f/4 maximum aperture for Canon digital SLR cameras
Fluorite UD lens elements produce excellent optical performance in resolution and contrast
Ring-type ultra-sonic monitor (USM) for quick and quiet autofocusing; lightweight construction
Image Stabilizer provides up to 4 stops of shake correction; water- and dust-proof construction
Measures 3 inches in diameter and 6.8 inches long; weighs 26.8 ounces; 1-year warranty

Product Description
Canon EF 70-200mm f/4L IS USM lens offers the highest possible optical quality with no change in aperture over the full focal range of the lens. This allows photographers to set exposure at the widest aperture and zoom all the way through to 200mm without having to decrease shutter speed. Developed for use with a Canon SLR camera, this autofocus telephoto zoom lens offers optimized use with the Canon EOS series digital cameras. Of particular note, Canon has introduced an image stabilizer (IS) that adjusts to meet the demands of professional photography. IS reduces dramatically the image blur caused by camera shake. Gyro sensors detect unwanted vibrations, triggering the corresponding movement of a correcting lens group perpendicular to the optical axis. This alters the light path, returning the image to its correct position on the sensor or film plane. For shooting immobile subjects, Mode 1 corrects for movement in the image along both the horizontal and v... Click Here for Detials

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details Canon EF 70 200mm f/4 L IS USM Lens for Canon Digital SLR Cameras

This telephoto zoom lens is designed with Canon's Optical Image Stabilizer technology while retaining compactness and lightness, in response to demands of photographers. This high zoom ratio lens is equivalent to a focal length of 88-400mm in the 35mm format (when used on Canon EOS cameras compatible with EF-S lenses), and the image stabilizer effect equivalent to a shutter speed about 4 stops faster than the same size lens without Image Stabilizer...