squig
Veteran
I'm just going though some 1920x720 footage and it's so darn nice looking. I noticed that if you leave the ML card inside the 5D3 you'll drain the battery even when the camera is turned on. But if I put in a non ML card and turn the camera on and off the battery stays fully charged. Must be something running even when the camera is turned off with the ML software.
Pull the battery then try to switch it on. Sometimes the battery is still fully charged but it won't start up unless you pull it first. Also wait till the light flashes before you pull the CF card, if you pull the card to quickly it can drain the battery.