The higher-end gaming units with high FPS give their owner a bigger advantage and boost than you can ever imagine. But there is a point where the higher Hz monitors are just higher than any eye can see or recognize a difference.
Well, the answer is a bit tricky and is still being studied. The way we see flashes of light like images versus the speed at which we can view motion is very different. The higher Hz, the more smoothly your images flow and the softer flowing motion you are able to see. Think about tv shows or old movies that our grandparents used to watch. You could see the images flickering in front of you. This is because the speed was slow enough for the eye to detect the flicker between frames.
Technology has come a long way! Yet another important concept: the whole of what we perceive is greater than what any one element of our visual system can achieve. This point is fundamental to understanding our perception of vision. Computer game players have some of the best eyes around. So good, in fact, that games are being used in visual therapies.
So before you get mad about researchers talking about what framerates you can and can't perceive, pat yourself on the back: if you play action-heavy games, you're likely more perceptive of framerates than the average person. The first thing to think about is flicker frequency.
Most people perceive a flickering light source as steady illumination at a rate of 50 to 60 times a second, or hertz. Some people can detect a slight flicker in a 60 Hz fluorescent lightbulb, and most people will see flickery smears across their vision if they make a rapid eye movement when looking at the modulated LED tail lights found in many modern cars.
But this only offers part of the puzzle when it comes to perceiving flowing smooth game footage. You can have a nanosecond of incredibly bright light and it will appear the same as a tenth of a second of dim light. But while we have trouble distinguishing the intensity of flashes of light less than 10ms, we can perceive incredibly quick motion artefacts.
The specificity relates to the way that we perceive different types of motion. But out in the periphery of our eyes we detect motion incredibly well. Busey says that the benefits of smooth, quickly refreshing imagery come in our perception of large-scale motion rather than fine detail. But how fast can we perceive motion? We are fairly accustomed to watching videos or shows that are played at a to frames-per-second rate. Movies shot on film are shot at a frame-per-second rate.
That means that 24 images flash past your eyes every single second. The refresh rate is the number of times that your monitor updates with new images each second. One frame per second is roughly equivalent to 1 Hz. A higher frequency usually means less flicker. Why do you need to know about flicker rate?
It may be distracting if you can perceive the flicker rate, rather than one continual stream of light and images. Are you actually seeing all those frames that flash by? The short answer is that you may not be able to consciously register those frames, but your eyes and brain may be aware of them.
Some research suggests that your brain might actually be able to identify images that you see for a much shorter period of time than experts thought. For example, the authors of a study out of the Massachusetts Institute of Technology found that the brain can process an image that your eye sees for only 13 milliseconds — a very rapid processing speed. Thirteen milliseconds translate into about 75 frames per second. Some researchers show rapid sequences of images to a person and ask for responses to see what they were able to detect.
Most LCD monitors today, let alone 10 years ago, have refresh rate of 60 Hz. On such monitor, no matter how much FPS your application, such as video game, has, you will see only 60 Hz, and additional frames will be ignored. Now take an old good CRT monitor. CRT monitors are good for this because their image is fully dynamic, that is every frame is drawn from scratch, while LCD monitors do not effectively draw frames that are not very different from each other, they only draw the difference.
Most good CRT monitors used to show Hz. When you set your refrest rate on such monitor to 60 Hz, you can clearly see extreme flickering. When you set 85 Hz, flickering becomes bearable, but still noticeable. The difference between Hz and Hz is still noticeable if you place two monitors close to each other and stare at them attentively, but it is very slim. I want to make a very important statement here that people arguing about FPS often do not fully understand:. Imagine if the scene is just Windows desktop, without any activity on it.
How much FPS do you need? Right, 0. Now, imagine if a dot moves on your screen at speed of 1 pixel per second. Imagine now an object that moves from the left edge of your screen to the right.
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