I was originally looking to get a Canon EF 24-70mm f/2.8L USM, for the focal length and glass speed. Taking into consideration that my 40D has a FOVCF of 1.6, I opted to get the EF 16-35mm f/2.8 — the equivalent focal length is close enough to what I was looking for. I don’t regret making that decision at all. This is an awesome lens.
Canon EF 16 35mm