If you're shooting HD-resolution video, your memory should be at least a Class 10 U1 or V10—both have minimum sustained speeds above 10 MB/s. If 4K resolution is more up your alley then we've got some good news for ya too! Your camera requires an even faster variety called ‘U3’ which has 30Mbps as its lowest recommended value and can handle data loads much quicker than lower levels such as "Plus" class cards(25MBps).