When Steve announced the iPhone 4, he couldn’t praise the retina display enough, and for the most part it is everything it’s made out to be. However one claim Steve made was that the display was so fine that the human eye couldn’t distinguish between the pixels.
Raymond Soneira, president of monitor diagnostics firm DisplayMate, has said that Apple’s retina display marketing is inaccurate, because he believes a display that truly makes pixels indistinguishable to the human eye would require a density in the vicinity of 477dpi. The iPhone 4 has only 326dpi which means we could distinguish the individual pixels, just about.
But then Phil Plait from Discover did some crazy calculations and finds that the 477 number applies only to people with perfect vision. Which is pretty much nobody, even someone with 20/20 vision would struggle tell where one pixel ends and another begins.
So I guess you could say Apple are half right? It sounds good from a marketing perspective though.
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