How many frames per second can the human eye see?

Posted By: Wicht

How many frames per second can the human eye see? - 01/21/08 22:20

http://www.100fps.com/how_many_frames_can_humans_see.htm
Posted By: Michael_Schwarz

Re: How many frames per second can the human eye s - 01/21/08 22:27

this should be in Gameplay & Game Design

awesome link! Thanks
Posted By: Damocles

Re: How many frames per second can the human eye s - 01/21/08 23:04

The faster your monitor reachts (TFT for example)
the Higher the framerate should be to see a fluid movement.

I can still see a difference between 80 FPS and 100FPS
on a tube Monitor.

Maby future Graphiccards will implement a smart motion blurr,
This way the framerate does not need to be Higher than 25FPS, to
see a perfectly smooth environment.
Posted By: PHeMoX

Re: How many frames per second can the human eye s - 01/21/08 23:33

Quote:

http://www.100fps.com/how_many_frames_can_humans_see.htm




Very fascinating indeed.

They forget that the problem isn't the amount of FPS, but rather whether or not it's perfectly constant and doesn't fluctuate much. Ideally it should not fluctuate at all. The human eye doesn't actually see slices of pictures, but a continuous stream of movie-information more or less. Therefore the knowledge that the human eye only can see so much FPS is irrelevant the moment you look at games. Games will never have a perfectly constant FPS, even games that have the FPS locked, it will still go up and down (rapidly) but maintain about the same FPS on average. That's the reason why it's so easy to spot the difference between 80fps and 100fps, it simply moves a lot more fluently.

Long story short, in games it's useful to know that a constant average of exactly 60 FPS gives a lot better results than an ever fluctuating FPS between 80 and 100.

What counts is smooth FPS averages and basically anything about about 25 FPS is enough. If there are scenes in which things are moving very fast, 25 fps might not be enough because it doesn't show enough information in between. Remember, our eyes don't see slices of images, but a continuous stream of movie-like information.

Quote:

The faster your monitor reacts (TFT for example)
the Higher the framerate should be to see a fluid movement.




No not at all, it should just be extremely constant. As long as refreshing happens at regular intervals you won't notice it.

Quote:

I can still see a difference between 80 FPS and 100FPS on a tube Monitor.





Those monitors tend to flicker a lot and that will give it away.

Cheers
Posted By: FBL

Re: How many frames per second can the human eye s - 01/22/08 00:11

It's not just a matter of having fluid animations, it's also an health issue.

Watching a flickering screen over hours simply can't be healthy.
TFT's are a lot better there, as they do not flicker.
Posted By: Joozey

Re: How many frames per second can the human eye s - 01/22/08 01:09

Quote:

No not at all, it should just be extremely constant. As long as refreshing happens at regular intervals you won't notice it.



Are you sure that a fluctuating fps is the cause for noticing it better?

quote from the article:
Quote:


Even though single eye cells (rods and cones) may have their limitations due to their chemical reaction times and due to the distance to the brain, you cannot be sure how they interact or complement or synchronize. If 1 cell is able to perceive 10fps, 2 cells may be able to perceive 20fps by complementing one another. So don't confuse "The human eye" with "The cell".




"by complementing one another".
I take that as a thousand 'eyecells' capture images at 10fps with constant intervals, but not synchronised to eachother. All the different images from different times (within 1/10th of a second) are processed and assembled by the brain, like a big puzzle that is constantly updated with new pieces.

This taken, what does it matter when something quickly fluctuates from, let's say 80fps to 100fps, or stay constant at 90fps. I don't think you wont notice an y difference at all since, in the end, the puzzle is updated with an equal amount of "black pieces".

I admit that this is what I think. I have not calculated the facts stated here for this theory.
Posted By: checkbutton

Re: How many frames per second can the human eye s - 01/22/08 01:40

25 fps IMHO.
btw:
Quote:

When will you ever need to go 100km/h in 5 seconds?



This sentence doesn't make any sense. Must be a physics genius...
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