This is an important because the closer a person holds their screen, the higher the resolution required so the pixels effectively disappear. I’ve noticed that some teens hold their phones only 7 to 8 inches from their eyes. Most teens hold their phones closer to their face than adultsĬontrary to the suggestions above, not everyone holds their mobile device 10 to 12 inches from their face. This in itself doesn’t mean too much because the percentage of humans with better than 20/20 vision is relatively small (around 10-15% not including corrective glasses). Even those with “bad” eyes can have 20/15 (or better) vision with glasses. The maximum acuity of a healthy human eye is 20/16 to 20/12. Second, the word perfect doesn’t really make sense when applied to eyesight. 20/20 vision does not correspond to the best possible vision found in humans. First, it is inaccurate to refer to 20/20 vision as “perfect” vision. This backs up Soneira’s claim that 300 pixels aren’t enough for a true retina display, but there several problems with the definition of perfect vision. If you carefully read Plait’s article, you’ll see that he admits someone with perfect eyesight would be able to see a pixilated image when holding a Retina display one foot from their eyes. There were several other problems we’ll discuss next. But that wasn’t the only problem with Plait’s and Soneira’s logic. Using a distance of ten inches, Plait confirmed that someone with normal vision could see visible pixels on a Retina display and the Retina display myth was busted. Plait conveniently used twelve inches, because that created the response he was looking for. Based on these calculations, Plait suggested Jobs’ claims were vindicated, but when you refer back to Jobs’ original quote, he refers to a distance of 10 to 12 inches. This blogger was the first to attempt to prove Jobs was rightĪ blogger named Phil Plait then redid Soneira’s equations based normal vision, instead of perfect vision.
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