BBTM
Senior Member
Since you got 17-50 for now, invest on 24-70 instead. Unless you travel often, 16-35 is the choice for FF. Then see where your interest lies. Want macro, go for 100mm. Want portrait, 85/135. Want wild life, all those tele lens. Dont forget to get a good new dry cabinet first, that's most important. Oh, remember to upgrade to a good flash too. 
