Mother of all ultrawide lens tests: Nikon vs Canon vs Sigma
You don't want to miss this!
Took me quite a lot of time, effort and a little bit of money to get this done, but I did an objective test of the best Nikon, Canon and Sigma ultrawides; namely the Nikon 14-24 f/2.8, the Nikon 16-35 f/4 VR, the Canon 16-35 f/2.8 L II, the Sigma 12-24 f/4.5-5.6, the Sigma 20 f/1.8 prime and the Canon 8-15 f/4 L fisheye. If you're contemplating any of these lenses or are just plain curious, do take a look. I promise it's worth the time.