I'm looking to pick up a tele-zoom for sports photography. I'm going to be doing high school sports events, as well as a range of other high school events.
I'm looking at:
Canon 70-200 f/4L Non-IS
Sigma 70-200 f/2.8 EX DG APO HSM
I will be purchasing a 1.4x TC regardless of the lens I pick up. I currently use a 50D, so the 1.6x crop will get me to that 320mm when the lens is all the way at 200mm. Which one would you guys recommend to me?