The Tamron 70-180mm F2.8 Di III VXD A056 is the third Tamron zoom lens with F/2.8 constant large aperture, which is combined with the 17-28mm F2.8 and 28-75mm F2.8 lenses to form a Sony E-mount Large ternary lens for full-frame mirrorless cameras. The weight is only 810g, the lens length is 149mm, and the 67mm filter is adopted, bringing photographers a new experience of using a new F/2.8 constant large aperture zoom lens
The lens adopts a new optical design of 19 elements in 14 groups, built-in 1 XLD lens, 5 LD lens, 1 GM molded aspherical lens, 2 Compound Aspherical Lenses.
The closest focusing distance is 0.85m, and the macro magnification ratio is 1:4.6
New VXD Bidirectional Linear AF Motor
Tamron engineers designed a new generation VXD (Voice-coil eXtreme-torque Drive) linear AF motor to provide the lens with fast and torquey AF to match the new 70-180mm lens with a small size but full focal length of F2.8. The VXD motor can drive two sets of focusing lenses at the same time, so that both AF-S and AF-C can maintain the two advantages of fast focusing and static