Canon 14mm f/2.8L II EF USM Ultra-Wide ...- User Rating: 
Summary for Canon 14mm f/2.8L II EF USM Ultra-Wide ...- significant improvement over the previous lens
Notes on Canon 14mm f/2.8L II EF USM Ultra-Wide ...- as soon as i received it, i set my camera up on a tripod and shot the same picture, first with the old canon 14mm, and then with the new. the improvement in the new lens in terms of corner to corner sharpness was really significant. the only thing that was somewhat disappointing, was that the new lens had considerably more fringing around high-contrast edges. i shot an image of an interior with a view out the window and there was a very wide, highly saturated blue fringe even in the center of the image. the old 14mm experienced fringing too, but rarely in the center of the image, and even at the edges, was not as extreme as it is in the center of the new lens. granted the difference in luminance was quite extreme between the interior and exterior (at least 5 stops) so this is not a problem that would effect every image, but it is something to be aware of. even with this problem, i would still recommend the new lens again as the increase in sharpness far outweighs the inconvenience of having to retouch the occasional fringing.
