When you compare it to my last wide field of the region, which was only 10 minute more exposure time, you'll notice a lack of richness. There is severe coma present all around the edges, and if it was cropped out, you would be left with only a small image from the central portion. The stars lack sharpness and there isn't much fine detail in the image.
Oh, it's ok to use in a pinch, that's why I had it out last night. But if one is serious about making good quality wide fields, this is not the lens to use.
