8 out of 10 points and recommendedprice, focal range, max apertures, surprisinlgy sharp at F2.8, lightslow and loud focusing
Great replacement lens for a kit, focal range makes you keep it on in most of situations and max apertures allow some portrait photorgaphy.reviewed November 22nd, 2009 (purchased for $363)
IQ deteriorates with zooming in so lens requires stopping down on long end. But at wide end even F2.8 is decently sharp.
For me the biggest issue with this lens was slow AF. It's a shame Sigma hasn't released this for Canon with HSM as it did with Nikon model...