Get Tamron SP 15-30mm f/2.8 Di VC USD Lens at B&H Photo
I had some trouble with the first sample of the Tamron SP 15-30mm f/2.8 Di VC USD, but the replacement looks like it’s OK (at least upon initial sorting of my images).
So I have some comparisons coming, including one in which I shot the Nikon 14-24mm f/2.8G focused at two different positions (since it has focus shift). The Nikon 14-24/2.8G focus shift makes it virtually impossible to match the zone of focus across the aperture series, so the dual series against the Tamron will serve both as a comparison and a tutorial on mitigating its behavior for the best results in the field.
I shot material at 15mm, 19mm, 24mm, 30mm for a good look at its behavior.