After looking at the Sigma 10-20 thread on here I bought one a week ago. Great lens. My question is whether or not anyone uses this for any kind of portait work. I realize that it is not a conventional portrait lens but figure that there might be times that you would use it effectively. If you have portrait shots using wide angle, not just the 10-20, please post them here to give me an idea when you use it. Thanks everyone.