The GZ-VX815 supports a better memory card type than most camcorders of this spec and age. This camcorder supports an SDXC memory card, whereas most camcorders of this spec and age support an SDHC memory card. This video camera also supports 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 actually the best supported memory card type across all video cameras of a similar age and spec to the GZ-VX815.
The worst supported memory card type amongst similar types of video camera is MS Pro-HG.
SDHC cards are DS cards with a higher capacity of up to 32GB.