Canon vs Tamron VC vs Sigma 24-70mm 2.8 Comparison Review

Now that I ordered my Canon 5D Mark III I can start buying some really good glass. Since I am mostly a run and gun shooter, I don’t have the luxury of time to swap out prime lenses out on the fly all day long, so that is why the first lens I want to buy is a 24-70mm f2.8. Now I have used the Canon 24-70mm many times in the past and I really like it, but I got really excited when Lee Morris from turned me the new Tamron 24-70 VC