Can anyone offer an opinion on the main difference bwtween these 2 lenses (apart from the obvious f-stop!) Clearly one is around double the price of the other no matter where you buy it so can onyone say that the 16-35 is worth the extra money? If it is, I'll buy if, but if the difference is minimal, then I can't see how the extra money will benefit.
Having said all that, I'm willing to pay for quality and am willing to chop in my Sigma 10-20mm f3.5-4.5 as well as my Sigma 70-200mm f2.8 to help fund this lens.
Any advice appreciated.
Phil



