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Maximum fps seen by human eye possible? (Read 474 times)
Obi-Wan_Kenobi
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Maximum fps seen by human eye possible?
10.05.06 at 01:12:20
 
Hello all

I have heard alot of stories that people can see more than 24.5 fps, and if a game has a avr of 50 fps ,they say it ain't fluid because some frame drops are like 27 fps.

what I have been told from pro's that a human eye can't see more than a max of 30 fps.

where is the truth and proof about this ongo'n thing?

If there are people that have the real truth on what the human eye can see, I would like to know, because I have heard many wierd things , but never could see the truth in those so called stories.

Cheers,

Obi-Wan Kenobi.
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« Last Edit: 10.05.06 at 01:13:54 by N/A »  
 
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Lt. Cmdr. Data
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Re: Maximum fps seen by human eye possible?
Reply #1 - 10.05.06 at 01:30:29
 
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Obi-Wan_Kenobi
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Re: Maximum fps seen by human eye possible?
Reply #2 - 10.05.06 at 01:37:51
 
hmm this was interesting :
The Human Eye and it's real capabilities - tahDA!
  This is where this article gets even longer, but read on, please. I will explain to you how the Human Eye can perceive much past the mis conception of 30 FPS and well past 60 FPS, even surpassing 200 FPS.


it is strange that my eyes can't see faster than 31 fps in a game, is this so odd?

I played StarWars RAcer @ 47 fps on a Voodoo5 5500 AGP 64MB on an AthlonXP 2700+ @ 1024 x 768 x16 in Glide + FSAA x4.

The game motion was very fluid, my eyes couldn't detect any stutter, so is it odd that my eyes can't see the difference between 47 fps avr or 74 fps avr that was with FSAA x2 setting?
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« Last Edit: 10.05.06 at 01:40:18 by N/A »  
 
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Lt. Cmdr. Data
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Re: Maximum fps seen by human eye possible?
Reply #3 - 10.05.06 at 01:38:33
 
Ooooh, what do we have here... another link!  Grin

http://www.daniele.ch/school/30vs60/30vs60_3.html
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Obi-Wan_Kenobi
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Re: Maximum fps seen by human eye possible?
Reply #4 - 10.05.06 at 01:49:39
 
ahh perfect Smiley

This nerve is just a pathway, and does no processing on its own. Its bandwidth is actually really huge, so a lot of information can be passed on. Nerve impulses also travel at over 200 mph to the brain, so it is nearly instantaneous for information to be received from the eye (since the optic nerve is only about 2 cm to 3 cm long).
The visual cortex is where all the information is put together. Humans only have so much room in the brain, so there are some tricks it uses to give us the most information possible in the smallest, most efficient structure.


T-Buffer's comes from the human eye heh then it went to 3dfx.
One of these tricks is the property of motion blur. We cannot get away from the phenomena because it is so important to the way we perceive the world. In the visual cortex we can theorize the existence of what I call the motion blur filter. Because the eye can only receive so much information, and the visual cortex can only process so much of that, there needs to be a way to properly visualize the world.


This what 3dfx tried to show with thier Napalm products I was thinking, simply brilliant actually.
Take for example a fast moving object. The faster it goes, the more it blurs (be it a snowflake or a train). Why does this happen? Let's take the example of a snowflake. At any time it has a fixed position in the universe, no matter what speed it goes at (unless it starts to get relativistic, then we go into some strange physics, but something that is not applicable to what we are talking about). Lets say at 5 mph, we see the snowflake in perfect detail as it falls to the ground. Now we hop into a car and go 55 mph. Can we see the detail of the snowflake? No, it is just a streak to us.

The Conclusion in short, so 30 fps isn't bad at all though the lowest fps can make it look worse than it really is.
So what is the answer to how many frames per second should we be looking for? Anything over 60 fps is adequate, 72 fps is maximal (anything over that would be overkill). Framerates cannot drop though from that 72 fps, or we will start to see a degradation in the smoothness of the game. Don't get me wrong, it is not bad to play a game at 30 fps, it is fine, but to get the illusion of reality, you really need a frame rate of 72 fps.

thanx for your help, if there are others with thier theories go ahead Smiley
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« Last Edit: 10.05.06 at 01:50:27 by N/A »  
 
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Renner
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Re: Maximum fps seen by human eye possible?
Reply #5 - 10.05.06 at 03:45:54
 
Another thing to think about:

Most people can see flicker in a CRT monitor at 75 Hz.  I need to run at 85 Hz or more to eliminate flicker in my peripheral vision.

In that case one's eyes are distinguishing 75+ screen re-draws per second.

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Re: Maximum fps seen by human eye possible?
Reply #6 - 10.05.06 at 03:56:21
 
Quote:
what I have been told from pro's that a human eye can't see more than a max of 30 fps.


I call bullsh*t.

Depends on the human, I can tell the difference between 30 FPS vs 60 FPS.

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Obi-Wan_Kenobi
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Re: Maximum fps seen by human eye possible?
Reply #7 - 10.05.06 at 04:18:17
 
yeps so it may seem, though this does have some clearity afterall.

So what is the answer to how many frames per second should we be looking for? Anything over 60 fps is adequate, 72 fps is maximal (anything over that would be overkill).

oh about the herz thing on TFT's then:
If your screen refreshes at 85Hz and your game runs at 50Hz (=50fps): Are you sure that you don't need to synchronize them? Are you sure, you don't need to play with a multiple of 85 to enjoy synchronized refresh updates? So the game running at 85fps may better than at 100fps. Maybe even a TFT display was better. It displays only with about 40fps but progressively.

got that from here:
http://www.100fps.com/how_many_frames_can_humans_see.htm

dunno if that is true, did sound sensefull though.
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« Last Edit: 10.05.06 at 04:23:08 by N/A »  
 
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Re: Maximum fps seen by human eye possible?
Reply #8 - 10.05.06 at 06:28:12
 
Quote:
I call bullsh*t.

Depends on the human, I can tell the difference between 30 FPS vs 60 FPS.


Short answer, but true. It depends from a game.
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Re: Maximum fps seen by human eye possible?
Reply #9 - 10.05.06 at 09:49:28
 
Quote:
I call bullsh*t.

Depends on the human, I can tell the difference between 30 FPS vs 60 FPS.



correct. its easy for me too see the difference in shooters like quake 3 with 30 and with 60 fps... especially when you move fast...
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Obi-Wan_Kenobi
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Re: Maximum fps seen by human eye possible?
Reply #10 - 10.05.06 at 16:07:50
 
okay why are movies in theatures and on the telly 30 fps?

is there an explanation too that, , if 60fps is vissible, why aren't movies , TV-Show's shown in 29.89 fps instead of 40 or 60 fps, are they blured?

if I have a Monitor @ 100 Herz and my game gets 47 fps AVR I see no jitter, I find it rather odd that some people do see the difference between 47 fps and 60.

I suppose humans are different on this perspective, some may have trained eyes to see the frames per sec faster, but still 72 fps is the limit  like the article pronounced:

So what is the answer to how many frames per second should we be looking for? Anything over 60 fps is adequate, 72 fps is maximal (anything over that would be overkill).

Above that on a 85 or 100 herz screen it isn't visible anymore., what I think it's alot in the peoples minds they think they see more but to be relistic they don't it's more like an illusion.

But if there are frame drops liek from 47 to 21 then it is noticeable, because 21fps is under the fluid framerate of 29.89 fps.

but to forget the logicness, not every human can see this difference otherwise there wouldn't be so much discussions about this case Smiley I truely do believe the people that can see more than 30fps , that's a miracle, but really 30fps is a fluid screen wityh no frame drops then for my eyes, here by we are all but different so it's hard to calculate what is visable for the one and the other.
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« Last Edit: 10.05.06 at 17:03:06 by N/A »  
 
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garyatwork
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Re: Maximum fps seen by human eye possible?
Reply #11 - 10.05.06 at 21:16:52
 
Quote:
okay why are movies in theatures and on the telly 30 fps?


This is an old and rather pointless argument that was beat to death back when 3dfx was still king.

TV and movies smear from frame to frame giving the illusion of a higher frame rate.

PC monitors are more precise devices compared to TV and the low framerate is more evident.
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Obi-Wan_Kenobi
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Re: Maximum fps seen by human eye possible?
Reply #12 - 10.05.06 at 21:23:47
 
hmm sorry it isn't pointless it's rather interesting, otherwise I wouldn't post such a difficult thing. 

And not to mention That I was argueing, to argue is  pointless, nether the less. Undecided

Hmm to watch TV on a monitor still gives a fluid image and still the images moves @ 30fps so does Live TV on both type of screens, still odd, I think it's something got to do with bluring, that makes the image smoother as in films and so on, something like that.

Anyways playing a game @ 30 fps at that framerate in a constantly stable situation does give a smooth image, but yes I do agree that 60 fps avaridge is a perfect speed, since that there are frame drops of 30 fps sometimes which keeps the framerate at a very fluid state Smiley
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« Last Edit: 10.05.06 at 21:33:27 by N/A »  
 
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Voodoo_Freak
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Re: Maximum fps seen by human eye possible?
Reply #13 - 13.05.06 at 19:54:43
 
Nah, I have a general comment:
In cinemas an average FPS rate of 25Fps is used and everybody thinks it's fluid.
In computer games some people think or believe or FEEL the same about 25Fps. Other would say it's not fluid. I would say 35Fps are enough to play absolutely fluid, fps rates above it give you more reserves in critical situation with loads of effects. That's why most of the gamers put so much money in their computers. They want and NEED these reserves.

What I call bullshit is if somebody tells me, that for example 40Fps are not enough, there is NO stocking, point.
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Obi-Wan_Kenobi
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Re: Maximum fps seen by human eye possible?
Reply #14 - 14.05.06 at 01:00:34
 
a avr of 70 to 80 fps is perfect, then the lowest framedrop is also higher than 30 fps Wink

Did more research myself today and yeap Gary and all you other lads are correct all the way, silly me hehe Lips Sealed

With an AVR of 40 you get framedrops below the 30 fps and that is where the stuttering's enter the battlefield yaay Roll Eyes

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« Last Edit: 14.05.06 at 01:01:38 by N/A »  
 
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