iPhone 4:What is Retina Display? [Explanation & Videos]
When Steve announced the new iPhone 4, he introduced a somewhat new word to the world, and that is Retina Display. So, what exactly is this Retina Display? Apple claims that there would be no visible pixels. Is this Possible? I got curious, and searched a bit and got my answers. So, here is what i have found.
To start with, Retina Display is not exactly iPhone 4’s display technology. Retina Display is actually a screenless display technology, where an image or video is directly projected to the retina of the eye, which omits all pixel related issues.
Still, iPhone 4 displays images at 326ppi, which means that iPhone 4 displays 326×326 (106276) pixels per inch. These are lot of pixels, so it would not be wrong to say that Apple is somewhat right when it says that “pixel density so high, your eye is unable to distinguish individual pixels”.
Having said that, how good a display looks depends on many other factors like, distance from the screen, FOV (Field of View), lighting, pupils dilation, and many such factors, which are bit more technical than my liking/expertise. So, to cut a long story short, Apple iPhone 4 screen actually offers “pixel density so high, your eye is unable to distinguish individual pixels”.
Read a technically detailed article here.
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