The HDR-CX290 supports a better memory card type than most camcorders of a similar age and spec to it. This video camera supports an SDXC memory card, whereas most comparable spec video cameras that have been around for around the same time as it support an SDHC 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 video cameras of a comparable age and spec to the HDR-CX290.
A MicroSD (Transflash) memory card is the worst supported memory card type amongst similar types of camcorder.
SDHC cards are DS cards with a higher capacity of up to 32GB.