Originally posted by: Jeff7181
For Microsoft Flight Simulator 2004 (and other "slow moving" games) I like at least 30... for Unreal Tournament 2003 I like NO LESS than 60. For racing games I like no less than about 45-50.
Also... there is no limit to what the human eye can detect. The human eye is analog, not digital... it doesn't "snap" pictures and send them to your brain. As with another other physical and mental task, practice will improve your capability. People in the Navy and Air Force are trained to recognize ships and aircraft that are displayed for as little as 1/600th of a second.
I took a "speed reading and comprehension" class in high school, and one of the exercises we did to increase the sensativity of the eye was to turn off all the lights in the room and use a projector to flash a word on the screen for a fraction of a second. We started at 1/16th of a second, and by the end of the class, I could read words that were displayed for 1/400th of a second.
That's a very interesting data-point, and tends to correlate with my personal observations about the subject as well. I always laugh when I read people posting "that the eye cannot percieve more than 24fps" on the internet, because I know that's not true, and that person is just repeating some bad information that they've been told.
The human visual perception system is an amazing, and complex thing. While it hasn't been totally unravelled, I suspect that a large portion of it works, as a continuous analog function, not as some sort of discrete frame-capture machinery. (Hence things like persistance-of-vision effects. Try swinging around a glow-stick on a string, in a darkened room.) Yet, there are some things that seem to be affected by very rapid "sample period" sort of things, like how things appear under the view of strobe lights.
It's all rather fascinating stuff. I doubt that true "machine vision" will happen anytime soon, in terms of exactly mimicking human visual capacity. Some animals (birds, mostly), have even better perception systems, in some cases.
Originally posted by: Jeff7181While that doesn't translate DIRECTLY to frames per second in a video game, it proves that there's no general limit to how many frames per second the eye can see because everybody has different physical and mental capabilities. Give me a game like Quake 3 or UT2k3 and I guarantee I can tell you the difference between 60 and 85 frames per second. Not just sitting there standing still of course... but let me play for 1 minute and I can tell the difference.
Exactly. There *is* a FPS number, that is the minimum required for the brain to percieve "motion", rather than a sequence of static images. It apparently varies between person, but is somewhere in the range of 10-20 FPS. But that number, is not the *limit* of visible perception of FPS, far from it. Too many people make that mistake.
Thanks for the interesting anecdote.