edible_candle
Member
Your eyes will naturally blur fast movement on a screen as well, provided it is at a high enough framerate. Movement on the screen is still movement to our visual cortex, it is still "real life." People have simply been conditioned to expect low framerates throughout their life, so a high framerate throws you off.There should be blur in movies, we naturally blur things that move in real life. That's why smooth motion in games/movies look so weird.
In video games, artificial motion blur is generally used to improve the fluidity of movement as perceived by our eyes and/or to imitate cinema. As you increase the framerate, the need for artificial motion blur is reduced (our eyes will blur movement more effectively with more temporal information).
In cinema, blur comes from the length of exposure per frame. Higher framerates require less exposure time for frame (though this can be changed), and thus, less blur. At low framerates, motion blur is necessary, because otherwise it wouldn't look like fluid motion. The higher the framerate, the closer you become to imitating "real-life," and just as in games with high fps, your eyes will blur the frames together effectively.
Of course higher framerates don't necessarily mean less motion blur, but they don't need shutter speeds as long as used in 24fps to produce an equivalent fluidity. With more frames/temporal information, our brain will merge the images into motion more effectively, even if there is less blur in each frame.To be honest, I don't understand why people want blur free action sequences. Our eyes/brain don't actually perceive action without blur. Just look at the fan in the video shot at 1/400s. It looks nothing like the way you see a fan in person. It's very janky and digital looking. It's also why proponents of higher frame rate filming aren't necessarily correct when they say action in 48/60fps movies will be less blurry. A 60fps movie shot at 1/60s will still be pretty blurry in action sequences. More frames will mean more information for your eyes/brain to work with and less strobe effect during camera pans and quick camera movements though.