You may have noticed from some of my recent posts that I have a super-wide angle—it is a Sigma 10-20—the same lens that I tried last year but returned because the images were soft. This Sigma is not quite as soft as the one I tried last year, but still the images are not as crisp and sharp as I would like. I recently tried the Nikkor 12-24, which was sharper, but the plus of the added sharpness was not worth the minus of it being not quite as wide as the Sigma (12mm as opposed to 10mm) and the very big minus of the Nikkor being twice the price of the Sigma! Or does it make it worth it? I am really not good at these types of decisions. What do you think?