What style and model of SD card should I buy for my new Panasonic GH5 camera for video recording. Or, should I buy a video recorder?
Well to cut to the chase, V90 SD Cards are a must for all 400Mbps settings on the GH5. If your shooting at 100Mbps or even 150Mbps you can use UHS-I memory cards. However, if you’re using the Panasonic GH5 for video, which you are, you’ll want to take advantage of the 400Mbps video and for that you’ll need a UHS-II card.
List of V90 SD cards here. Find the Atomos Ninja Inferno Kit he talked about here.