I'm interested in buying a new lens this Christmas and I am thinking about the Zeiss 50mm f/1.4 for my Canon 60D. At the moment my 50mm is the Canon EF 1.8 version. After reading some reviews it seems as if the Zeiss isn't all that great and that the corners are soft. My question is if it is a good lens on a crop body seeing that the corner sharpness wouldn't be as bad. Are there other problems with this lens besides corner sharpness? I have no problem with manual focus, if anything I think it looks kind of fun to have more to manually adjust when composing a shot.