What’s the meaning of Ultra resolution? It’s for enhanced Field of View (FoV). If turned on, the camera will have a wider view angle. Related articles Which FOV viewing angle mode can be available under each video resolution in the camera? What are the video resolution modes? Why does the camera become so hot when it's recording? (YI 4K+ Action Camera) How many metering modes are there and for what scenes are they good for? How do I select 4K 60fps?