Tamron 17-50mm F4 Di III VXD Lens - Sony

The world’s first lens that covers from ultra wide-angle through the standard range, 17-50mm
The excellent close-range shooting performance provides an MOD2 of 0.19m (7.5in) at the wide end and 0.3m (11.8in) at the tele end.
The optical construction of the 17-50mm F4 consists of 15 elements in 13 groups.
The 17-50mm F4 weighs just 460g (16.2oz) and is a compact 114.4mm (4.5in) long, a size that's well-balanced even when attached to a Sony mirrorless camera body
Features Moisture-Resistant Const ruction and Fluorine Coating on the front and rear lens surfaces, providing durability in natural environments