The Tamron 17-35mm f/2.8-4 Di OSD is a light, ultra-wide zoom for full-frame camera systems. It doesn't deliver absolutely perfect optics, but is quite compact and affordable.
Small and light; Full-frame coverage; Sharp optics; Good flare resistance; Available for Canon and Nikon systems; Weather protection and fluorine coating; Works with mirrorless via adapter.
No optical stabilization; Strong vignette; Visible distortion; Disappointing manual focus experience.