A:Answer Selection of the SD card varies with how you want to use the camera. If you want to use it primarily for still photo's, use Sandisk Extreme Plus or Extreme Pro 80 MB/s - 95 MB/s "U-1" cards. If you want to fully use all of the features at maximum quality, use Sandisk Extreme Plus or Extreme Pro 80 MS/s - 95 MB/s "U-3" cards, and you will get excellent results. The only way you can shoot 4k video at highest quality, as well as fully take advantage of the High Frame Rate recording feature is with the U-3 cards, and they are expensive but worth it. Besides, Best Buy has them on sale at the moment. I only use the 64 GB size right now, but am considering using 128 so that I can shoot more video. The camera can only use one SD card at a time, which is why I go with a large capacity card.
