The Tamron AF55-200mm f4-5.6 Di II Macro LD (Model A15) is a tele-zoom lens designed exclusively for digital SLR cameras with smaller-size image sensors at an affordable price. Di (Digitally integrated)-II lenses are designed for exclusive use on digital cameras with smaller-size imagers. This lens is not designed for use with 35mm film cameras or digital SLR cameras with image sensors larger than 24mm x 16mm. For photographers who bought their digital SLR camera in a kit with a standard zoom lens but are dissatisfied with the telephoto capability of the standard lens, the AF55-200mm f4-5.6 Di II LD Macro offers in a second lens a desirable telephoto range at an affordable price. The tele-zoom from Tamron will allow these photographers to enjoy the telephoto capabilities that yield dynamic images in many photographic situations including sporting events, large wildlife, scenery and portraiture. Popular-type Tele-zoom for Exclusive Use on Digital SLR CamerasThis is a telephoto zoom for exclusive use on digital SLR cameras that covers the focal length range equivalent to 85-310mm when converted to a 35mm format. The lens will allow owners of digital SLRs fitted with standard zoom lenses to enjoy with ease the professional-looking "pulling" and "compression" effects particular to telephoto lenses. Lightweight and Compact Design Thanks to Optical System for Exclusive Use on Digital CamerasSince the optical system is designed for exclusive use on digital cameras, the image circle is smaller, resulting in a compact package measuring 3.3 inches, accepting a 52mm standard filter and weighing a mere 10.4 ounces. Revolutionary Minimum Focus Distance of 37.4 inches for 1:3.5 Macro Capability over the Entire Zoom RangeThe 55-200mm zoom lens realizes an MFD (Minimum Focus Distance) of 37.4 inches over the entire zoom range, the top level of the closest focusing distance among tele-zoom lenses. Since the maxim