But don't forget it's soft @ f:2.8, still for the price it's a cracking lens.
Oh please, back to dpreview, off you go
Seriously, a lot of my shots are made with the Sigma 70-200, and NO-ONE has ever said to me that my shots are soft. Softness is soo overrated, but if you want the absolute imagequality when photographing charts and books, feel free to buy the most expensive lens you can find. I'll just use my cheap scanner
Here's my review of the 70-200 by the way: http://www.cameralabs.com/forum/viewtopic.php?t=16662