What an amazing lens! I used to struggle between Nikon 17-35 and 14-24 but once I got my hand on this, there are no regrets. The build quality is top notch, and although it's not rational to say so, to my eye, this lens produces image with great 3-D look. None of the wild angle lens I tried before have such great image quality! BTW, all those ravings about this lens on the internet are true. Absolutely worth every penny if you like ultra wild angles.