One good thing about the Rokinon . . .

. . . is that it doesn't distort for distortion's sake, the way some fisheye lenses do. If the horizon is centered and there are no obvious straight lines in a large picture element, it doesn't look fisheye-ish at all, as exemplified by this picture, which is straight out of the camera with no correction. No one has put this phenomenon to better use than Glen at Focus on Newfoundland, some of whose pictures are here: www.ipernity.com/home/newfoundland .