Just purchased a 7D MkII; currently own a T3i. Have a Vivitar Series 1 2XMC4 AF teleconverter and it worked just fine (with the expected limitations of course) using Tamron 16-300mm f3.5-6.3 on the T3i. This lens does not work at all on the MkII. I ...
Off-topic question for you, Mr. E... If not disclosing something you want to keep private (your town), where are you at - which zoo is restricting lens lengths? I'm near Santa Barbara, and last time I went to our zoo no such restictions. Also, nothin...
I can't comment on your experience with your 3rd-party lenses. But I do know that that last statement, if true, cannot be generalized to other examples of the 7D2. My wife uses an EF-S 17-55mm f/2.8 IS on her 7D2 with no problems whatever.BobBoston,...