Is an ultra-high-definition television worth it? Here's what science says.

Many people wonder if it's really worth investing in an ultra-high-definition television. In this regard, Scientists think that under typical usage conditions, no. because the human eye has a resolution limit and is only able to perceive a certain number of pixels, above which a screen provides the eyes with more information than they can detect.

Researchers from the University of Cambridge and Meta Reality Labs have confirmed this, demonstrating that in an average living room, a 44-inch ultra-high-definition (4K or 8K) television, approximately 2.5 meters away, It offers no additional advantage over one of those listed as "Quad HD". of the same size. The results of their work were published in Nature Communications .

How to calculate the most suitable resolution for your home?

The researchers have also developed a free online calculator where users can enter the size of their room, as well as the dimensions and resolution of their television. to determine the most suitable screen for your home.

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More pixels do not always mean better visual perception, because the human eye has a resolution limit that depends on factors such as screen size, distance, or central or peripheral vision, researchers have pointed out, and they have corroborated that a greater number of pixels implies a higher cost and energy consumption. but not automatically a better visual experience.

"As major engineering efforts are made to improve the resolution of mobile, augmented reality, or virtual reality displays, it is important to know the maximum resolution at which further improvements do not provide an appreciable benefit ",” said Maliha Ashraf, a researcher at Cambridge's Department of Computer Science and Technology and the study's first author.

Researchers have also found that the eye's resolution limit is higher than previously thought, but that there are significant differences between color and black and white images, since the brain is not able to perceive the details of color images very well, especially when viewed with peripheral vision.

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