Canon EF Autofocus Lenses Canons reputation for excellence in optics has been well established for years. And with the introduction of EF lenses for the EOS, its only getting better. EF Lenses have the largest diameter mount of any 35mm camera, which not only strengthens the whole system, but permits optical innovations never before possible. L-Series lenses have better sharpness and contrast because Canon uses aspherical elements to eliminate spherical aberrations. In addition, the L-Series telephotos use UD (Ultra-low Dispersion) glass to reduce chromatic aberration resulting in more accurate colors. A built-in Ultrasonic focusing Motor (indicated by USM) provides pro-quality AF speed with split-second accuracy. The new EF 300mm f/2.8L IS USM sets new standards in performance and versatility with its lighter weight, better balance, and particularly its new Image Stabilization. In addition, the tripod collar can be removed for even more weight reduction and hand-holding comfort. Item Specifications: Product Description: Canon EF telephoto lens - 300 mm Lens System: Telephoto lens Mounting Type: Canon EF Lens Aperture: F/2.8 Focal Length: 300 mm Min Focus Range: 8 ft Focus Adjustment: Automatic, manual Lens Construction: 13 group(s) / 17 element(s) Special Functions: Tele Filter Size: 52 mm Length: 10 in Weight: 5.7 lbs More details about product EF 300mm f/2.8L Image Stabilization USM Lens
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