Christmas came early for Eric. I picked up a new lens today, a Sigma 17-35mm zoom. I've been a little annoyed by my 10D's cropping factor, and wanted a wider-angle lens. I thought, very briefly, about getting one of Canon's wonderful L wide angle zoom lenses. But at two and three times the cost of the Sigma lens, I just couldn't do it.

So far, so good with the Sigma. Image quality is OK, and the f2.8 at 17mm is nice. Downsides? It certainly has a cheaper feel than the Canon lenses, and its autofocus motor doesn't seem to be as fast. The 82mm filter size is annoying, too. More thoughts after I've played with it some more.