Lens Comparisons

[um012015]

Looking to purchase a fast lens for sports with limited resources.  Can someone with knowledge gave me a comparison of the Canon 70-200mm f/2.8L IS USM II with Tamron SP 70-200mm f/2.8 DI VC USD and Sigma APO 70-200mm f/2.8 EX DG OS HSM.  Would welcome any other recommendations.

[ebiggs1]

If you don't need f2.8, the Canon EF 70-200mm f/4L IS USM Lens is better that either the Tamron or Sigma.  Just to throw out another choice.  Plus its price is in the same ball park (as the Tammy and Siggy f2.8) and it is a real Canon L.