I am not really familiar with professional camera and filming equipment, but it seems that P+S Technik's Weisscam HS-2 MK II is one of the ultimate high-end cameras. A crew of photographers from the US took such a camera to Tanzania and filmed the wildlife of the Serengeti National Park, the Ngorongoro Crater, Tarangire National Park and other parks in ultra slow motion. Check the video for some amazing shots!
African Safari from Linjawi Arabians on Vimeo.
Kudos to Linjawi Arabians for uploading the footage!