• 200-500mm zoom lens with f/5-6.3 maximum aperture for Nikon digital SLR cameras.
• 2 low-dispersion (LD) glass elements reduces chromatic aberration for sharp, clear images.
• Close focusing distance of up to 8.2 feet; detachable magnesium alloy tripod .
• Filter effect control lets you rotate filter with hood attached; 12- to 5-degree angle of view.
• Measures 3.7 inches in diameter and 8.9 inches long; weighs 43.6 ounces.

From the Manufacturer --------------------- A powerful zoom for capturing close, detailed views of faraway subjects, this high-magnification beauty is the perfect choice for nature and sports shooters. Remarkably light and compact, it compresses the apparent distance between objects within the frame, giving stunning pictorial effects. This is a zoom lens from Tamron that lets you bring your far away subjects up close while compressing the distance between the main subject and the background for professional-looking results. Even while covering up to a 500mm that enables you to take ultra telephoto s of subjects further than the eye can see, its design is extremely lightweight and compact. When ed on an APS-C size digital SLR camera, it provides a focal length equivalent to a 760mm for super ultra telephoto imaging. SP AF 200-500mm F/5-6.3 Di Highlights Filter Effect Control (FEC)to Enhance the Operational Ease of your Polarizing Filter Use The Filter Effect Control is designed to rotate the filter to the desired position while the hood is attached. This is accomplished by turning the FEC ring that in turn rotates the portion of the filter where the filter is ed. Digitally Integrated (DI) Lenses for Top Imaging Performance Di (Digitally Integrated Design) is a Tamron designation that applies to lenses that have been optimized for digital capture using advanced multi-coating techniques and optical designs that assure excellent image quality across the entire picture field. Because of these characteristics, Di lenses provide outstanding performance on cameras with full-frame and APS-C format sensors as well as on 35mm film. Super Performance (SP) for Discriminating Shooters Tamron SP (Super Performance) series is a line of ultra-high-performance lenses designed and manufactured to the exacting specifications demanded by professionals and others who require the highest possible image quality. In creating SP lenses Tamron’s optical designers put their foremost priority on achieving superior performance parameters—they are all designed to a higher standard with little regard for cost constraints. As a result, Tamron lenses bearing the SP designation feature impressive and innovative designs that have established an enviable reputation for excellence among those knowledgeable photographers that demand the very best. Internal Focusing (IF) System Internal focusing provides numerous practical benefits to photographers including a non-rotating front filter ring that facilitates the positioning of polarizing and graduated filters, and more predictable handling because the lens length does not change during focusing. Even more important, Tamron’s Internal Focusing (IF) system provides a much closer minimum focusing distance (MFD) throughout its entire focusing range. In addition, IF improves optical performance by minimizing illumination loss at the corners of the image field, and helps to suppress other aberrations that become more troublesome at different focusing positions. Low Dispersion (LD) Glass for Greater Lens Sharpness Low dispersion (LD) glass elements in a lens help reduce chromatic aberration; the tendency of light of different colors to come to different points of focus at the image plane. Chromatic aberration reduces the sharpness of an image, but glass with an extremely lowdispersion index, has less of a tendency to separate (defract) a ray of light into a rainbow of colors. This characteristic allows the lens designer to effectively compensate for chromatic aberration at the center of the field (on axis), a particular problem at long focal lengths (the telephoto end of the zoom range), and for lateral chromatic aberration (towards the edges of the field) that often occurs at short focal lengths (the wide-angle end of the zoom range.)