100-400

As the title says, FHD at 240 fps using R3 and 100-400mm IS II + 2x II + 1.4x III, colors straight from camera https://www.youtube.com/watch?v=L_0F_mQ7gkg

Good day all, Wanted to quickly see if anyone has had results or experience with the combo above. I picked up the 6D Mark II last year during the Black Friday extravaganzas and have generally liked it (the Dynamic Range hasn't been an issue for my usual subjects, aviation). Up until now I have...