The HM-TA20 supports a better memory card type than most similar spec video cameras that have been on the market for around the same time as it. This Panasonic camcorder supports an SDXC compatible memory cards, whereas most similar spec video cameras that have been available for a comparable time to it support an SDHC compatible memory cards. In addition, this video camera supports an SD compatible 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 across all camcorders of a similar age and spec to the HM-TA20.
A MicroSD (Transflash) compatible memory cards is the worst supported memory card type across comparable types of video camera.
SDHC cards are DS cards with a higher capacity of up to 32GB.