This is the 70-300mm F/ 4.5 - 6.3 Di III RXD (Model A047), to be used with Sony full-frame E-mount mirrorless cameras. Tamron says this telephoto zoom lens is the world's smallest size and lightest weight, at 148mm long and a max diameter of 77mm, and a weight of 545g. There are special elements added to the lens to fix chromatic aberration and others, while still achieving the hi-res image with bokeh qualities. The lens has a Rapid eXtra-silent stepping Drive motor unit, high-speed precision AF, and moisture-resistant construction. Ideally you'd use this lens for landscapes, sports, pets and wildlife.
You'll have a great time zooming in on objects at a distance and amplifying them.
Features: Fast Hybrid AF compatible Eye AF compatible Circular aperture Moisture-resistant construction BBAR coating
Weight: 19.2 oz
Length: 5.8 in Max.
Diameter: 77mm