The HM-TA20 supports a better memory card type than most comparable spec video cameras that have been available for a similar time to it. This Panasonic video camera supports an SDXC memory card, whereas most video cameras that were released more than two years ago support an SD memory card. In addition, this video camera supports an SDHC 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).
This video camera's memory card type (SDXC) is in fact the best supported memory card type amongst all medium sensor size video cameras that were launched more than two years ago.
Amongst similar types of video camera the worst supported memory card type is MicroSDXC.
SDHC cards are DS cards with a higher capacity of up to 32GB.