yep thats how I had it (wont fit the otherway round)
I'll play around with it again tonight
it'll be interesting if it works have you tried it on a 5Dmk2? does it AF too
I didn't buy the Kenko until after I sold my Mk II and got the Mk III. Wow, I misread your original post.
5D Mk III, Elan 7e, Nikon J1, some old rangefinders
Tamron 24-70 2.8 VC, 70-200 f/2.8L IS II, 400mm f/2.8L II, Sigma 85mm, 50mm, & 35mm f/1.4's, Rokinon 14mm f/2.8, Canon 2x Extender II, Kenko 1.4x, 430 EX II, Elinchroms