I need a zoom lens with a f/2.8 to complement a 50mm f/1.4 and a 70-200 2.8 IS. I am using a 1.6 crop body (40d) but have plans to get a FF after I have the lenses covered.


If you can think of whats inside a yearbook; I shoot everything in there (group shots, portraits, sports, etc). It doesn't rain much here so weather sealing is not vital but would be nice for travel.


I have narrowed the field down to:


Canon 24-70 f/2.8 L USM


or


Canon 16-35 F/2.8 L II USM


Does anyone have suggestions? Bonus if you own/have used both.