The Tamron 11-20mm F2.8 ultra wide angle zoom lens has a constant aperture of F2.8. Despite its fast F2.8 aperture, the lens is very small and feels perfectly balanced on a compact APS-C mirrorless camera body. With a full-frame equivalent zoom range of 16.5-30mm, it's ideal for everyday use. At the 11mm ultra-wide-angle end, the lens delivers stunning close-up performance, with a minimum object distance (MOD) of 0.15m and maximum magnification of 1:4. This allows macro shots to be taken at an extremely wide angle, with a range of creative effects. For example, a close-up of a flower and its natural surroundings can be captured, while a telephoto macro shot shows only the flower against a blurred background. In addition, the silent RXD (Rapid eXtra-silent stepping Drive) stepping motor AF drive is perfect for both still and video shooting. This zoom lens is protected by a moisture resistant construction and a durable Fluorine Coating for added protection when shooting outdoors. With its compact size, fast F2.8 aperture, convenient zoom range and superb image quality, the 11-20mm zoom lens is ideal for travel, landscape, street and general photography. Key Features: Ultra-wide angle zoom lens with fast F2.8 aperture and superior handling Excellent optical performance Exceptionally quiet RXD stepping motor drive, perfect for video use MOD of 0.15m (5.9in) at 11mm focal length for creative ultra-wide angle macrophotography Waterproof construction and fluorine coating for extra protection