Retina Display PPI comparison

Discussion in 'Design and Graphics' started by Let's Sekuhara!, Jun 14, 2012.

  1. macrumors 6502

    Let's Sekuhara!

    #1
    So Retina Display is any resolution of 300ppi or finer, right?
    What are the Pixel-Per-Inch specs of the new Retina 15-Inch MacBook Pros, The New iPad (Gen3), and the iPhone 4/4S?
    It seems the PPI of the devices is not readily available and I'm sure someone here knows. :)
    Just want to get a feel for the difference between all three.
    Thanx.
     
  2. macrumors 6502a

    btbrossard

    #2
    Here's some details for you:

    New iPad (3rd Gen)
    9.7" Display, 2048x1535 resolution, 264 ppi

    iPhone 4/4s
    3.54" Display, 640x960 resolution, 326 ppi

    MacBook Pro 15-inch Retina Display
    15.4" Display, 2880x1800 resolution, 220 ppi
     
  3. macrumors 68030

    NutsNGum

    #3
    There's a gigantic list of display PPIs on Wikipedia if you Google "display PPIs" it's the second link on the list. How hard is it?!?
     
  4. macrumors 6502

    #4
    No. It depends on the distance viewing the screen. Since you hold a tablet and laptop farther from your face than a phone, the PPI can be less than 300 and still be "Retina." Retina is nothing but a marketing term for High-resolution screens.
     
  5. macrumors 65816

    #5
    It is a marketing term, but it does have a meaningful definition. It refers to having a high enough resolution that someone with good eyesight cannot resolve individual pixels at the normal viewing distance for that device.
     
  6. macrumors regular

    Randomoneh

    #6
    Good? Good?! Below average at best.

    And even if someone couldn't discern a pattern like this one, that doesn't mean that person can't perceive higher quality that that!

    How so?

    A quote from Japanese NHK study:

    "The higher the angular resolution, the greater the sense of realness, and the sense greatly saturates above about 60 cpd [120 pixels per degree]; above 155 cpd [310 pixels per degree] - images are indistinguishable from the real object." (page 4.)

    Test subjects had 20/10 vision. Theoretically, maximum angular resolution they can perceive is 120 pixels per degree (60 cpd, 0.5 arcminutes per pixel) - yet they manage to perceive 310 pixels per degree.
     

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