I have a 40D and I'm thinking of getting this cheap lens just to get some wider shots, at the moment the closest thing to wide I have is my 18-55 and I'm hoping this will get wider shots. I'm curious as to how it will perform on a cropped sensor majority of the pictures samples I see are on a full frame camera and I know that they can get wider than my 40D. Advice and possibly some sample pictures are appreciated

