This 16-element design includes two aspherical elements and it focuses as close as 1.5 (0.5m), even at the 28mm wide angle zoom setting. Inner focusing means the front section doesnt rotate, a real benefit to photographers who use filters. Fast and quiet an EOS hallmark is provided by Canons exclusive micro USM, unique among 28 - 200mm lenses as of August 2000. Features an entirely new Canon-developed optical design, with inner focusing and five-group zooming, maximum magnification of 0.28x and 72mm filter size. Accepts optional EW-78D lens hood (strongly recommended) and is compatible with EF Extension Tubes EF12 and EF25 (maximum magnification with EF25 is 1.10x). Item Specifications: Product Description: Canon zoom lens - 28 mm - 200 mm Lens System: Zoom lens Mounting Type: Canon EF Lens Aperture: F/3.5-5.6 Focal Length: 28 mm - 200 mm Optical Zoom: 7.1 x Min Focus Range: 17.7 in Focus Adjustment: Automatic, manual Lens Construction: 12 group(s) / 16 element(s) Special Functions: Zoom Filter Size: 72 mm Length: 4 in Weight: 17.6 oz Localization: English More details about product EF 28-200mm f/3.5-5.6 USM Lens
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