Nerdy stuff warning. NHK has developed an 8K 4x slow-motion camera system that can record continuously at 240 FPS (Frame Per Second), by utilizing a brand new sensor. The camera was developed to broadcast ultra-smooth 8K imagery in order to enhance the viewing experience.
Source: NHK Develops 8K 240 FPS Broadcast Camera – Y.M.Cinema – News & Insights on Digital Cinema