The 70-200mm F/2, 8 complements the extremely successful concept of the Tamron 28-75mm F/2, 8 & extends the focal length range to 200mm. Particular attention was placed on finest top quality combined with high luminosity & compactness as is the case with the award-winning 28-75mm & *SP lenses in general. In spite of its compact construction, the 70-200mm is packed full of features, which permit creative picture taking in all situations. The professional image quality also does justice to demanding photographers. Extreme sharpness, resolution & brilliance are its trademarks. Moreover, it is the best of its class in the categories minimum focus distance (only 0.95 m in the entire focal length range) & a magnification ratio of (1:3, 1). When using full frame cameras the medium tele-range of 70 mm to 200 mm is completely covered. When used together with APS-C sized cameras, the lens offers an equivalent of 109 mm to 310 mm arises (referring on the angle of view of the full frame) **. Whether for nature, sport or people-photography, the extraordinary optical performance will inspire you. *SP (super performance) high-capacity lenses of excellent optical & mechanical quality. ** Tamron uses a factor of 1.55 for the conversion to full frame. The designation “ Di” (Digitally Integrated Design) marks a generation of lenses, which have been specially adapted to the higher requirements of digital SLR cameras (APS-C & full frame)