My friend has been trying out portrait/ppl shooting. He wants to create a full body bokeh when shooting models/ppl.. Can this be done with a 50mm F1.8 or 85mm F1.8? Coz he's thinking of buying a lens specially for portrait and for shooting full body ppl pics. Can a 50mm F1.8 be able to create this effect? I know for shooting face portraits, a 50mm f1.8 can definitely produce a very nice bokeh. But if he wants full body bokeh, what lens is suitable? Hope u guys can help, he's a canon user..