The GZ-R310 supports a better memory card type than most video cameras of this type and age. This video camera supports an SDXC compatible memory cards, whereas most small total megapixels camcorders that are a comparable age to it support an SD compatible memory cards. In addition, this JVC video camera supports an SDHC compatible memory cards. 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 compatible memory cards is in fact the best supported memory card type across all small total megapixels camcorders that were released around the same time as the GZ-R310.
The worst supported memory card type across comparable types of video camera is SD.
SDHC cards are DS cards with a higher capacity of up to 32GB.