[97TurboDSM]

as grimm said, 1.8 or 1.2L anything inbetween is a waste of money. the 1.8 really is one of, if not the best, best lens for the money. Sigma's 50/1.4 is arguably better than canon's 1.4 and incredibly close in performance to canons 1.2L. i own sigma's 50/1.4 and its awesome.