The JVC GZ-R15 supports an SDXC memory card which is better than most camcorders that were released more than two years ago. Most big sensor size video cameras that were released more than two years ago support 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).
An SDXC memory card is actually the best supported memory card type across all camcorders of this age and type.
Across similar types of camcorder the worst supported memory card type is MS Pro-HG.
SDHC cards are DS cards with a higher capacity of up to 32GB.