Hi
I have a 70-200 F2.8 II lens and I am planning to buy an extender, I see two choices canon extender ef 1.4x iii and 2x iii . Initial thought is 2X gives more reach than 1.4X, but the price of both of them is same. I found online that the AF speed is reduced by 75% on 2X and reduced by 50% for 1.4X. Please advise.