The Tamron 35-150mm f/2.8-4 Di VC OSD lens promises pro-grade results on a budget, but the focus ring turns during autofocus, which will make it a nonstarter for many.
Light, compact zoom; Sharp optics; Optical stabilization; Full-frame coverage; Dust, splash, and fluorine protection.
Manual focus ring turns during autofocus; Not that wide or long; Visible distortion; Vignette at widest f-stop.