Extender 1.4x III with macro tube


EOS M6 Mark II
Jul 2, 2015
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 still works just fine. The minimum focusing distance with 20 mm extension tube is about 7 m. Now autofocus works even over far corners.