canon 5d mark iii memory card slots - Best Memory Card for Canon EOS 5D Mark IV - Canon Rumors CO 888 slot app

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Canon EOS 5D Mark IV is one of the best selling DSLR cameras in the world. EOS 5D Mark IV has two memory card slots, one is CompactFlash card slot, the other is SD card slot. To max use of Canon EOS 5D Mark IV, you'd better get fast memory cards for Canon EOS 5D

The Canon 5D Mark III has dual memory card slots that hold one CF (CompactFlash) format memory card and one SD (Secure Digital) format memory card.

Hi all, I have finally got my Canon 5D Mark IV. I have never used two card slots. If I am using one slot - is there anything I need to do to set it up?