The Canon XF205 supports an SDXC memory card which is better than the SDHC memory card supported by most video cameras that have been on the market for a comparable time to it. 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 amongst all comparable spec camcorders that were released around the same time as the XF205.
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.