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My friend just told me the eye can only see 30FPS

GrayFoxPL

Member
I know right?! But then, he kind of made me uncertain. He explained it as this: The human eye has a response-time of 30hz, where everything completely in sync with this would look completely smooth (if it has motion blur and so forth) but that we perceive higher framerates better because it means there's more information leading to a smaller chance of your eye getting out of sync with the video.

He's been teasing me for a while for being somewhat PC-masterrace, and he told me this when I remarked to DayZ looking really choppy on his PC.

I'm kind of stumped, I want to prove him wrong but I seem to not find any good sources that can disprove him.

Although he does say it's just a placebo effect from becoming an elitist blind to NeoGAF's words... It kind of pissed me off... I tried to explain how higher framerates lead to better reponsetime and smoother gameplay, but he just mocked me.

ibowE0qQQ0KZm4.gif
 

benny_a

extra source of jiggaflops
Human vision is based on continuous integration of small parts that are sequentially updated. To visualize:
800px-Vision_2_secondes.jpg


Lots of interesting topics about this if you want to learn more:
Change blindness
Perception blindness
Blindsight
Salience
 
Your friend is a dumbass, but ask him for a resource.

His reasoning doesn't even make sense.

60 FPS and higher framerates than that are consistently smoother than 30 FPS. Keep staring at some looping footage at 30 FPS or 60 FPS. You aren't going suddenly out of sync. Maybe stare at something else, go do something else, and come back, and it will still look the same.

There is no chance involved. 30 FPS isn't suddenly going to look the same when the chances are right.

Also, great comparison site:

http://30vs60.com/
 

Teknoman

Member
I know right?! But then, he kind of made me uncertain. He explained it as this: The human eye has a response-time of 30hz, where everything completely in sync with this would look completely smooth (if it has motion blur and so forth) but that we perceive higher framerates better because it means there's more information leading to a smaller chance of your eye getting out of sync with the video.

He's been teasing me for a while for being somewhat PC-masterrace, and he told me this when I remarked to DayZ looking really choppy on his PC.

I'm kind of stumped, I want to prove him wrong but I seem to not find any good sources that can disprove him.

Although he does say it's just a placebo effect from becoming an elitist blind to NeoGAF's words... It kind of pissed me off... I tried to explain how higher framerates lead to better reponsetime and smoother gameplay, but he just mocked me.

This is what you do.

Get a Dreamcast, sit your friend down in front of Sonic Adventure 1 and the Sonic Adventure 2. All should be clear.
 
Eyes do not update in frames. The eyes updates tiny spots all the time and your brain keeps it all assembled so it gives a full picture of your what you perceive as the image in front of you.
Not quite. Our visual system does temporal integration, so anything above a so called critical flicker fusion frequency would be perceived as perfectly smooth (minus aliasing).
So you could call CFF the "frame rate of our eyes". But yes, that is higher than 30 Hz, except for night vision.
I was unsure, but bumping my monitor up to 120Hz (or 144Hz) presents quite a noticeable difference, it's very obvious to me but 60 is absolutely fine. Not 30 -> 60 difference but it's clearly smoother. I have no idea how noticeable say, 240Hz would be though. Probably not very.
No benefit besides less input lag and temporal aliasing. It could also have a higher motion resolution if your 120 display doesn't have a low persistence mode.
 

Orbis

Member
The difference between 30 and 60 fps is obvious.

Past 60 fps there's almost no difference (I can't see any, personally.)
I was unsure, but bumping my monitor up to 120Hz (or 144Hz) presents quite a noticeable difference, it's very obvious to me but 60 is absolutely fine. Not 30 -> 60 difference but it's clearly smoother. I have no idea how noticeable say, 240Hz would be though. Probably not very.
 

Haunted

Member
He's been teasing me for a while for being somewhat PC-masterrace, and he told me this when I remarked to DayZ looking really choppy on his PC.
woah bro

Friends don't bring up a lacking framerate on their friend's PC.



That said, your friend is full of shit. Eyes don't have "hertz", we perceive our surroundings in one continuous smooth flow of motion - that said, 30 (or 60 or 120) updates per second (though it doesn't really work that way) is not a problem for human eyes.
 

WillyFive

Member
Yo what.

The eye has been proven to see at least at "220 frames per second".

Yep, fighter pilots have been tested and proven that they can see an image flashing for a period of time as short as 1/200th of a second.

The idea that a person can only see 60 or 30 fps is absolutely ridiculous. It doesn't work like that.
 

Gustav

Banned
It's true in the sense that you cannot discern between the individual frames anymore. You can see that it runs smoother though.
 

Mechazawa

Member
Your friend ain't no neurologist and he made up some bullshit on the spot when you pointed out that he was using his PC to play a game that runs like garbage.
 

Iadien

Guarantee I'm going to screw up this post? Yeah.
There's clearly a difference between 30 fps and 60 fps, but it's far more noticeable for me in certain games, such as shooters.
 
woah bro

Friends don't bring up a lacking framerate on their friend's PC.



That said, your friend is full of shit. Eyes don't have "hertz", we perceive our surroundings in one continuous smooth flow of motion - that said, 30 (or 60 or 120) updates per second (though it doesn't really work that way) is not a problem for human eyes.

It's a laptop for 2k, I'll tease him all I want.
 

benny_a

extra source of jiggaflops
Not quite. Our visual system does temporal integration, so anything above a so called critical flicker fusion frequency would be perceived as perfectly smooth (minus aliasing).
So you could call CFF the "frame rate of our eyes". But yes, that is higher than 30 Hz, except for night vision.
Good point. When I hear "eyes updating in frames" I'm thinking of progressive scan which is my baggage of how a frame is put on a display.
 

Poudini

Banned
I was unsure, but bumping my monitor up to 120Hz (or 144Hz) presents quite a noticeable difference, it's very obvious to me but 60 is absolutely fine. Not 30 -> 60 difference but it's clearly smoother. I have no idea how noticeable say, 240Hz would be though. Probably not very.

I can't see any, but that's probably because I'm expecting a 30 to 60 kind of difference tbh.
 

Sentenza

Member
It's not just that 30 hz aren't the maximum refresh rate the human eye can discern ( even ignoring how the human eye is in fact an analog camera and doesn't work by "hertz" at all)...
It's that they are actually dangerously close to the bare minimum necessary to achieve a somewhat convincing illusion of continuous movement.
 

Iorv3th

Member
Your friend sounds like one of those shitty kids we all know growing up that makes outrageous claims and wont back down no matter how much evidence is stacked against them.

"My dad shot bigfoot" etc.

Just the worst kind of liars. If you put up with his lies you are only making things worse. Defriend him immediately.
 

MrBali

Neo Member
Someone post those 30vs60 fps gifs please so my eyes can feast on them again. OP show your friend those, make him look at them and dare him to deny the beauty!
 

oti

Banned
I have a friend who believes that 60 FPS is only a marketing trick by the console manufacturers to sell new hardware since the graphis themselves aren't "that much better" this time around.
 

oti

Banned
Someone post those 30vs60 fps gifs please so my eyes can feast on them again. OP show your friend those, make him look at them and dare him to deny the beauty!

I did this. My friend swears he doesn't see a difference. I know, right?
 

colon

Member
I remember reading an article about frame rates in an issue of Game Informer many years ago (maybe late 90s?) and they also made that claim.
 

Sentenza

Member
Your friend sounds like one of those shitty kids we all know growing up that makes outrageous claims and wont back down no matter how much evidence is stacked against them.

"My dad shot bigfoot" etc.
"My uncle is a jet pilot, he has a F14 down in the garage".... "It's right here in front of us. You can't see it right now because the stealth shields are up".

Note: actual shameless bullshit a neighbor used to tell us when I was a kid.
 
I'm tempted to show him this thread, but at the same time as he does drive me crazy at times, he is still a great friend who has been there for me, who has taught me a lot, who has made me a much better person.

Hmmmm...
 

jakomocha

Member
Have him play a 3-4 player cup in Mario Kart. Then play it again but with just you (2 players). See if he really denies seeing the difference after that.

(I have friends who don't really care about framerate and they definitely could tell the difference anyways.)
 

Jamix012

Member
I hate when people say they can't see the difference.

Yes you can.

Conversely, fuck you. I usually can't tell the difference. It has to be something with intense movement like F Zero for me to tell the difference. I've never denied that other people can tell the difference, but you don't have to be a dick about other people.
 

ShaunBRS

Member
If you actually want to demostrate it on his terms: make a gif/video, 60 frames long, 60fps, 60Hz display, vsynced. Alternate red and yellow frames. If your eyes sync at 30Hz you'd see only red, only yellow, or a static split image (you'll actually see both in a consistantly intermittent fashion, obviously).
 

LowParry

Member
I do believe there are people out there that can't see the difference. Why that is I don't know. I can tell the difference easily.

As for your friend OP, I'd be asking for a source of his information. Otherwise, he's probably just bullshitting with you. Unless he's really serious then show him your sources and make him feel like an ass.
 

Tekku

Member
I don't know how you can even argue about this. You don't have to be sensitive about frames to discover the difference between 30 and 60+. Or is there some rare eye condition I haven't been told about?
 
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