Watch out for SACamera... prices r good cos apparently grey imports!
You might want to double check but the canon TC might not fit on the Sigma.Yup, that is my next mission. Thanks for doing that to my brain
Now I need to know if I should get a Canon or Sigma. I have the Canon 70-200 F4 and the Sigma 100-300 F4. I know it's preferred to use the same brand tele with lens.