Zeiss continues their resurrection of manual focus, AI-S lenses with the 21mm f/2.8 Distagon. I've put the full specs on the Zeiss lens page, as usual. The 21mm is well regarded for corner performance, but that comes at the price of that huge 82mm front element. This is also the priciest Zeiss yet. Personally, I would have preferred to see the 21mm f/4 resurrected (maybe it still will be).