17-55 should be better. Here you are two links for your reference.
Canon 15-85mm + market price
Canon 17-55mm + market price
thisIf you want "really really sharp" ... then you get a prime lens, not a zoom lens![]()
You should probably do more research than assert an opinion as fact.If you want "really really sharp" ... then you get a prime lens, not a zoom lens![]()