I have it, very sharp lens. But slow to focus, as noted above. Excellent results for shooting the family around the house, scenery/landscapes, etc. I have tried to use at basketball games, and I have to take a LOT of shots to get a few decent ones. Can't really complain for the price.
Joe Schmoe or others, would the 1.4 focus fast enough for use with indoor sports? I am able to get close enough to court that i don't want any more than 50mm.