8 out of 10 points and recommendedSharp wide open! Fast AF and effective OSWeight, not weather sealed, shorter focal length at close focus
This lens (at least my copy) lives up to the excellent measurement results on this site. Sharpness is very impressive, it's sharp everywhere. Right from f2.8 over the zoom range.reviewed April 27th, 2013
There is only one caveat: the effective focal length becomes significantly shorter with closer subjects. At closes focus (80cm) it's a 50-100mm. Being a lens in the portrait range (focus around 3m / 10ft) it is not a 50-150 but somewhere between a 50-120 and a 50-135. I found that when I made some test pics to compare sharpness with my old Canon 70-200 f4L.