Situation matters sometimes, but you can perceive the difference between 30 fps and 60 fps. Military and commercial aerospace flight simulators learned this ear

Situation matters sometimes, but you can perceive the difference between 30 fps and 60 fps. Military and commercial aerospace flight simulators learned this early on and they MUST hold 60 fps or pilots get sick. High end digital televisions and cinema are having a hard time jumping to 60 fps which for many reasons would simplify things since the rest of the consumer electronics works at that, but traditional cinema is locked at 24 fps. There are various stories around you should be able to find that when cinema experiments with 60 fps (or even 48 fps), or compare televisions that can automatically upscale the framerate, consumers complain that it looks "cheap" because the quality matches what they see on YouTube or their home video camera or the evening news. People have been conditioned to accept 24 fps as high quality cinematic so they think it looks "cheap" when in reality they are getting more fidelity. (You should be able to find old reviews of The Hobbit and people comparing it to the evening news.) To your original point though, in this case, people were able to distinguish the different frame rates. The difference necessarily register as frame rate to people, or paradoxically, necessarily even better.