In the manual for my Canon EOS 250D it says: "MP4/H.264 UHD 4K (3840 x 2160) at 23.976p/25p [120 Mb/s]"But a reasonable SD card has a writing speed of half that value (60-70Mb/s).My questions are:What do those [120 Mb/s] mean?And what is the minimum ...
