The HC-W850 supports an SDXC memory card which is better than the SDHC memory card supported by most similar spec video cameras that were released around the same time as it. In addition, this video camera 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).
This camcorder's memory card type (SDXC) is actually the best supported memory card type amongst all camcorders of this spec and age.
Amongst comparable types of camcorder the worst supported memory card type is MS Pro-HG.
SDHC cards are DS cards with a higher capacity of up to 32GB.