Excellent Value Wide Angle

I bought this lens mainly for taking pictures of family occasions indoors. But after using it and seeing how incredibly sharp it is, I now also use it for landscape photography. I was originally considering the Canon 10-22mm lens but it was too expensive for my budget. The Sigma 10-20 was at least 25% less expensive.
It is very solidly constructed, with an excellent finish. The motor is totally silent, and very fast. The focus is always spot on. The lens is very sharp from edge to edge. It goes wide enough that you can capture everything in a room by standing in a corner. In fact you need to be careful not to get your own feet in the picture!