I just bought a plain EOS 6D (not a Mark-anything). I am finding that the AE Lock button only hold the exposure while holding down the button. Releasing the button unlocks the exposure. Is this normal? On my EOS 50D and 60D pressing and releasing the AE-L button DOES lock the exposure for a few seconds. I see Canon saying they added, on 6D Mk.II and other models an *H setting in the button operation function to enable holding the exposure. My plain 6D has an *H option, but it does not cause the exposure to hold when releasing the AE-L button. Am I under a misconception about how the AE-L function should be working, or is it my camera?