The Vixia HF R40 supports an SDXC memory card which is better than the SD memory card supported by most comparable spec camcorders that are a similar age to it. In addition, this 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).
This video camera's memory card type (SDXC) is actually the best supported memory card type across all small sensor size camcorders that have been available for more than two years.
The worst supported memory card type across similar types of video camera is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.