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Hey everyone,  This is my first time on the forums here, please forgive me and direct me to where I should post this if I have submitted incorrectly... I have been trying to register my 7Dii and new 90D on canon's website and it says the registration...
I have a 5D Mark II.. will AF still work with a Canon 1.4x TC and a 100-400mm USM II? The new one? I'm new here..i think this is the correct board to post in..please correct me if i'm wrong! thanks!
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