Tamron’s 16–50mm f/2.8 A is built around the idea that a fast travel lens should still feel close to kit-lens size. It is 79.6 mm long and 305 grams in the Sony mount, with a 55 mm filter thread.
The lens is designed for APS-C cameras, not as a general full-frame zoom. Sony E and Canon RF versions are scheduled for October 29, Nikon Z for November 19 and Fujifilm X for December 17.
An independent hands-on review found good sharpness and pleasing out-of-focus rendering but noted distortion, vignetting and some color fringing that benefit from correction profiles. At roughly $529–$549 in the review, it is worth comparing against Sigma’s 18–50mm f/2.8, especially if the extra 2 mm at the wide end matters.
What to do: Check the mount-specific specs and sample images before deciding whether this beats your current travel lens.