A highly praised lens, which I wanted from the day the price was announced. At 800.- USD it's very reasonably priced considering how bright it is, how well constructed it is and how sharp it is.
I have always been a fan of Sigma lenses, and the Japanese manufacturer's latest initiatives have just made me a bigger fan. Sigma does everything right these days.
A really wide zoom (like REALLY!) even on a DX-body, which it's made for. Rectilinear in spite of its very wide angle of view and definitely a lens I'm going to love.