So I got my EOS-M last week and finally received my Meike EF to EF-M adapter. The adapter works fine with my Canon EF lenses, but when I attach my Rokinon 85mm chipped lens on I get a "Firmware upgrade failed" error.
The Roki works fine on my 6D, indicates focus and no error. I also have a M42-EF adapter that is chipped, and it works fine on my 6D, but gives the same error on the EF to EF-M adapter.
Is anyone using chipped manual lenses with the Canon brand EF to EF-M adapter successfully? Is it a chip to EOS-M issue or is it an adapter issue? My understanding is the electrical connection in the adapter are just pass thru, no circuit involved.
Not a big deal, I can just tape off the contacts when using the EOS-M. Just wondering if anyone else is experiencing the same or if there is someting to be had for going with the Canon adapter.