The Canon Legria HF R606 supports a better memory card type than most small sensor size camcorders that have been available for more than a year. This Canon camcorder supports an SDXC memory card, whereas most camcorders of this age and spec support an SD memory card. In addition, this Canon video camera supports 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).
An SDXC memory card is actually the best supported memory card type across all small sensor size camcorders that are a comparable age to the Legria HF R606.
The worst supported memory card type amongst similar types of video camera is SD.
SDHC cards are DS cards with a higher capacity of up to 32GB.