The EOS C300 supports an SDHC memory card which is better than most medium sensor size video cameras that have been available for a similar time to it. Most video cameras of a similar type and age to it support an SD memory card. SDHC cards are DS cards with a higher capacity of up to 32GB. The worst memory card type of all video cameras that are a similar age to the EOS C300 is MicroSDXC and the best is SDXC.
SDHC cards are DS cards with a higher capacity of up to 32GB.