The HDR-CX290 supports an SDXC memory card which is better than most similar spec video cameras that have been around for more than two years. Most similar spec camcorders that were released around the same time as it support an SD memory card. In addition, this Sony video camera support a Memory Stick (MS) and 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).
An SDXC memory card is in fact the best supported memory card type across all video cameras of this type and age.
Across comparable types of camcorder the worst supported memory card type is MicroSDXC.
SDHC cards are DS cards with a higher capacity of up to 32GB.