I' m looking for a wide angle lens to fit my 10D, I need excellent quality.
I know both Canon 16-35mm f/2.8L
and 17-40mm f/4. The first one is a more expansive than the second , but is there a great loss of quality between the two?
Do others brands also have similar products (Sigma, Tamron,etc...)?
What do you use and why?
The use for me of this lens will be aviation but also professional as for weddings, parties, cocktails, shows and other events.
Many thanx for the precious advice