Joined Feb 2010
Location: Boston, MA
Joined Jul 2008
Neither version of the 16-35 is really considered to be a really great ultrawide, but the II is better than the I. It uses 82mm filters though, not 77 like the I.
Joined Apr 2011
77mm filter size is a boon if you've got a bunch of other stuff using that size already Most people would be pressed to see the difference in actual use without being told which is which
5d3,17-40,24-105,24 1.4,85 1.4,70-200 2.8 is ii