The HC-VXF999 supports a better memory card type than most big sensor size video cameras that were released in the last year. This video camera supports an SDXC memory card, whereas most big sensor size video cameras that are a similar age to it support an SD memory card. SDXC cards are SD cards but with a much higher capacity and faster processing speeds. They have a maximum capacity of 2TB (Terabytes).
An SDXC memory card is in fact the best supported memory card type across all recently released big sensor size video cameras.
An SD memory card is the worst supported memory card type across comparable types of video camera.
SDHC cards are DS cards with a higher capacity of up to 32GB.