I decided to use the SD slot in the 1DMKII thinking it is faster to push a few buttons to swith cards than it is to change cards.
According to the manual, all I need to do is push the bottom button on the left (the one with the card and magnifying glass) and turn the back dial to select card 1 or 2. But, it does not work. It does not change which card is in use. Even when the CF card is full, I cannot switch. If I take the CF card out of the camera, then it switches to the SD card. If I want to switch back, I have to take the SD card out.
I must be missing something. I checked custom function settings to see if maybe something was turned off, but I did not see anything that should affect this. Any idea what I am doing wrong or not doing? Thanks,