EA, With a dynamic telephoto zoom range and compact profile, the 70-300mm f/4.5-6.3 Di III RXD Lens for Sony E from Tamron provides a popular telephoto zoom range for the full-frame Sony E-mount mirrorless cameras. This lens spans a useful short- to long-telephoto range and measures just 5.8″ in length with a maximum diameter of 3″, and it weighs just 1.2 pounds. It offers optical performance with aberration correction that delivers high image quality. Tamron’s RXD stepping motor unit provides high-speed, high-precision, and quiet operation and also takes full advantage of in-camera features including Sony’s Fast Hybrid AF and Eye AF functions. The 70-300mm f/4.5-6.3 is a highly-practical telephoto zoom lens that performs across a diverse range of shooting styles including sports and other athletic events, wildlife, portraits, and more.