The Tamron 100-400mm F /4.5-6.3 Di VC USD (Model A035) is a highly portable, ultra-telephoto zoom lens with AF precision for shooting instantaneous movement with the utmost clarity. With this effectively positioned, extraordinary glass LD (Low Dispersion) lens, aberrations typical with many telephoto lenses are a thing of the past. Tamron’s proprietary eBAND (Extended Bandwidth & Angular-Dependency) Coating suppresses reflections, yielding vivid images of amazing clarity. And thanks to a lens barrel made primarily of magnesium, the 100-400mm boasts the lightest weight in its class*, making it ideal for handheld shooting over long periods of time. With a MOD (Minimum Object Distance) of 1.5m and a maximum image magnification ratio of 1:3.6, the 100-400mm lets you soften the foreground or background to dramatically emphasize your subject at close range. Moisture-Resistant Construction and a fluorine-coated front element provide additional protection when shooting outdoors.