You can see a blurry figure. In the above example, Superman is a blur while flying into Doomsday, so that is flight speed. Ulik can't see Thor's arm move:
https://i.imgur.com/cYYTLLu.jpg
A ceiling fan appears as a blur. That is a far cry from hyperspeed mode where the rest of the world is perceived as frozen during Superman's prolonged interaction with Flash. People here always claim that this or that character would be a statue to Superman. Doomsday should be at least near statue against Superman based on standards here.