The JVC GZ-R315 supports an SDXC memory card which is better than most video cameras that have been around for around the same time as it. Most similar spec video cameras that have been available for around the same time as 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).
This camcorder's memory card type (SDXC) is actually the best supported memory card type across all small sensor size video cameras that came out more than a year ago.
The worst supported memory card type across comparable types of camcorder is SD.
SDHC cards are DS cards with a higher capacity of up to 32GB.