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| p.1 #4 · 3rd generation teleconverter question |
Agreed with both Aravind and Jim above.
The AF speed and accuracy of the Mark III TCs used in combo with the newer Mark II supertele lenses is reported to be faster and better, respectively, at least according to Canon. In real-life maybe the new TCs are a little faster but I couldn't quantify the speed improvement, let alone the accuracy.