While overall dimensions are confined to the absolute minimum, the new SP AF70-200mm F/2.8 zoom lens is packed with features that allow stress-free photography: a versatile MFD of just 37.4" over the entire zoom range; best-in-class maximum macro magnification ratio of 1:3.1 at f=200mm; and an advantageous internal focusing (IF) system. The new tele-zoom lens covers a desirable focal length range of 70mm medium telephoto to 200mm telephoto when mounted on full-size format SLR cameras and a focal length range from 109mm to 310mm ultra telephoto when mounted on a DSLR camera with an APS-C sized imager.
SP (Super Performance) Series 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.
Internal Focusing (IF) System Internal focusing (IF) 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 Elements The Tamron SP AF 70-200mm F/2.8 Di LD (IF) Macro lens adopts 3 Low Dispersion (LD) glass elements to help reduce chromatic aberration for edge-to-edge sharpness and high-contrast image quality over the entire zoom range.
MFD of 0.95m throughout the range plus 1:3.1 Magnification Ratio This lens boasts a best-in-class minimum focus distance of 0.95m over the entire zoom range, making large-aperture telephoto zoom photography possible over a longer shooting range. Plus, a maximum magnification ratio of 1:3.1 (at 200mm, with a minimum focus distance of 0.95m) enables you to enjoy close-up macro photography of flowers, insects, and other tiny objects.
Digitally Integrated (Di) Lens 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.
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