70-200mm 2.8 Options
Hey everyone. I have a 5D Mark III and am looking to buy a telephoto zoom. I'm looking at the 70-200mm options from Canon, Tamron, and Sigma. Any opinions on these? All three have a fixed 2.8 aperture throughout the focal range. My gut tells me to stick with Canon but my wallet says to go with Sigma or Tamron. All of the reviews on the Sigma and Tamron on B&H appear to be the same 4.5-5 stars. Any suggestions?