The HDR-CX220 supports an SDXC memory card which is better than the SDHC memory card supported by most medium sensor size camcorders that have been around for more than two years. In addition, this video camera support MS PRO Duo and MS Pro-HG Duo and SD 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 memory card is in fact the best supported memory card type across all camcorders of a comparable age and spec to the HDR-CX220.
The worst supported memory card type amongst similar types of video camera is MicroSDXC.
SDHC cards are DS cards with a higher capacity of up to 32GB.