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Hi all, I was just taking some macros using 100-400 L II, with an extension tube and 1.4x III on a 7D2. Of course, AF points were limited to a central 1+4. But, if I place the (elec contacts pin equipped) extension tube BETWEEN the lens and the extender, all AF points are usable. And the lens...

Hi all, I was just taking some macros using 100-400 L II, with an extension tube and 1.4x III. Of course, AF points were limited to a central 1+4. But, if I place the (elec contacts pin equipped) extension tube BETWEEN the lens and the extender, all AF points are usable. And the lens still...