Canon Rumors - Your best source for Canon news, rumors and creators

Hey all,

Was looking for some insight on the aforementioned (in the subject) wide angle lenses. I shoot on a 5D Mark III, and am wondering if the f2.8 16-35mm is considerably sharper on the edges compared to the f4 17-40mm. I would be using the lens for primarily outdoor landscape use, but definitely would be used diversely. Any comparison of the two is appreciated.

Cheers!