I am looking to buy a new wide angle lens for my Canon 5D11. I have been thinking about the 17~40mm f4. I might consider the 16~35mm f2.8 as well. If you own one of these lenses, what is your opinion.
That is a good point. I certainly don't want a lens that is not suitable for a full frame camera. The Canon 17~40 f4 L is probably the one I will go with. It has a sale price on it this month. I really don''t need a fast lens for landscape photography.
You can't use the Tokina -- that's a crop-frame lens (like a Canon EF-S lens). It wont mount on a 5D body.