Hey, Vsauce. Michael here. I am at the White House, in America's capital, Washington, D.C. America makes a lot offeature films every year Hollywood. But they don't make the mostfeature films every year. Nigeria makes more. But the country that makes the mostfilms every single year is India. Every two years, the country of India fills up enough film with uniquefeature films that stretch all the way from this city,Mumbai, to where I live,
in London. That's double what Hollywoodproduces in two years. That is a lot of movies, but is reallife a movieé I've discussed the framerate of the human eye before but how does the resolution of the human eye compare to a camera or screené VHS, LaserDisc, DVD, Bluray, IMAX. Numbers like these arepixel dimensions. When multiplied they tell us the total number of pictureelements an image is made up of.
A figure often used to describe digitalcameras. It might sound like more is better, but to be sure numberslike 1920 by 1080 are not resolutions per se.More pixels is only part of the equation. Resolution is about distinguishing fine details and that depends on a lot of other factors. For instance, the amount of light, thesize of the sensors, what the millions of pixels are actuallyencoding and how close the subject is. I mean, up close
Salvador Dali's painting of his wifelooking at the Mediterranean can be resolved into boxes. But from a far, well, it's Abraham Lincoln. For crying outloud, on a small enough screen from far enough away, low and high,socalled resolutions on screens, aren't even resolved differently from one another by your eye. How different nearby pixels are from oneanother also matters. This is called spatial resolution.
For instance, if I go outoffocus the number of pixels in the tutorial framestays the same but you can't resolve as much detail. Now, with all this in mind we can still compare human vision to a digital image,by asking a better question. Assuming everything else is optimal, howmany pixels would you need to make an image on a screen large enough to fillyour entire field of view look like real life, without anydetectable pixelationé Now we are getting somewhere.
Kind of. The analogy is still crudy because a camera snaps an entire frameat once, whereas our eyes move around. The brain amalgamates their constant stream of informationinto what we call vision sight. In fact, the image created by theeyeball alone during a single glance would hardly even be acceptable on abroken TV screen. We think our eyes create images like this pictureGuy took of me with a camera. But for one thing, unlike a camera,you've got some stuff
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