I grabbed one of these and have to say its great for this little lens
and worth getting as it is much nicer to simply clip a bayonet style hood on than have to screw one in
http://www.ebay.com/itm/230549092253?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_2028wt_1165
hope this helps anyone looking for a cheap good hood for their 50 1.8
and worth getting as it is much nicer to simply clip a bayonet style hood on than have to screw one in
http://www.ebay.com/itm/230549092253?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_2028wt_1165
hope this helps anyone looking for a cheap good hood for their 50 1.8