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. Canon maintains the image quality and focus speed with a more compact and less expensive zoom. Perfect for the photographer on the go. Item Specifications: Product Description: Canon zoom lens - 70 mm - 200 mm Lens System: Zoom lens Mounting Type: Canon EF Lens Aperture: F/4.0 Focal Length: 70 mm - 200 mm Optical Zoom: 2.9 x Min Focus Range: 4 ft Focus Adjustment: Automatic, manual Lens Construction: 13 group(s) / 16 element(s) Special Functions: Zoom Filter Size: 67 mm Length: 7 in Weight: 24.9 oz Localization: English More details about product EF 70-200mm f/4 L USM Lens
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