Can someone who owns at D600 with the grip please confirm that the AE-L/AF-L button CAN invoke autofocus? I am trying to see if my grip is defective. When I press the button, I Can see AEL/AFL light up in viewfinder, but the camera won't focus when I press the button.
When I press the same button on the actual body, everything works as normal. And the shutter button on the grip works as normal also.