Going along with what MattG said, if you plan on upgrading to a FF (full frame) or APS-H body, then I'd suggest also looking at the 16-35 f/2.8 and the 17-40 f/4. Both are excellent lenses with the 17-40 being the 2nd cheapest L lens on the market right now. Both will give you the wider range you may want with your current body, and if you upgrade to a FF or APS-H body, you'll love the super wide angle you can get from these lenses.


Mike