The HDR-TD30 supports a better memory card type than most big sensor size video cameras that are a comparable age to it. This Sony video camera supports an SDXC memory card, whereas most big sensor size video cameras that were released more than two years ago support an SDHC memory card. 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).
This video camera's memory card type (SDXC) is actually the best supported memory card type amongst all video cameras of this spec and age.
The worst supported memory card type amongst comparable types of video camera is MS Pro-HG.
SDHC cards are DS cards with a higher capacity of up to 32GB.