The Sony HDR-PJ260 supports an SDXC memory card which is better than the SDHC memory card supported by most comparable spec camcorders that have been on the market for around the same time as 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 in fact the best supported memory card type amongst all medium sensor size video cameras that were released around the same time as the HDR-PJ260.
Amongst comparable types of camcorder the worst supported memory card type is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.