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iPhone 4's "Retina Display" Claims Challenged

adeelarshad82 writes "Of the many things that buyers might need to know about the new iPhone, Raymond Soneira — president of DisplayMate Technolgies — added one more to the list. Soneira challenged Apple's claims that Apple's new iPhone contains a so-called 'retina display.' According to Soneira, the resolution of the retina is in angular measure, 50 cycles per degree, where a cycle is a line pair, which is two pixels, so the angular resolution of the eye is 0.6 arc minutes per pixel. So, if you hold an iPhone at the typical 12 inches from your eyes, that works out to 477 pixels per inch. At 8 inches it's 716 ppi. You have to hold iPhone 4 out about 18 inches before it falls to 318 ppi. So the iPhone has significantly lower resolution than the retina."

13 of 476 comments (clear)

  1. Nailed 'em by snowwrestler · · Score: 4, Funny

    This sober, fact-based scientific argument will surely force Apple to adjust their bombastic, exaggerated marketing tactics.

    --
    Build a man a fire, he's warm for one night. Set him on fire, and he's warm for the rest of his life.
  2. Re:Real Ratina Display by xTantrum · · Score: 5, Funny

    Who cares about a ritnawhatchumacallit. If i get an Iphone I'll get laid! :D

    --
    $action = empty(PHP) ? backToC() : unset(PHP) ; "when the concrete cases are understood, the abstractions are readily
  3. Re:Real Ratina Display by Red+Flayer · · Score: 5, Funny

    Who cares about a ritnawhatchumacallit. If i get an Iphone I'll get laid! :D

    I'm not sure how discriminating your taste is, or what your preference is, and I assume you're male...

    You are aware of what kind of person would be laying you because of your iPhone, right?

    I mean, they probably wouldn't be nerdy *AT ALL*. What good is that?

    --
    "Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
  4. In other news... by Senjutsu · · Score: 5, Funny

    Android OS is not actually an operating system by or for Androids.

    Windows 7 wasn't really the idea of some random people in cafes and showers.

    Saturns - not actually made on Saturn. Surprising, I know.

    The Emotion Engine has never shed a single tear.

    Magic Markers have no magical properties.

    1. Re:In other news... by Obfuscant · · Score: 5, Funny
      Magic Markers have no magical properties.
      1. You have never given one to a three year old and watched the expression on the face of his mother. Magical.
      2. One word: inhale.
  5. Re:This looks like a typical straw man argument. by QuantumRiff · · Score: 4, Funny

    I've seen pictures of it, and it looks like crap. I have a nice 21" Viewsonic CRT monitor, running 1024x768

    --

    What are we going to do tonight Brain?
  6. Re:bad vision by Red+Flayer · · Score: 4, Funny

    It's recommended that you look at your display or phone from around an arms length away or risk damaging your vision in the long term.

    Well, *I* recommend that you place the display right up against your eyeball and then carefully pull your bottom eyelid under the lip of the display to keep it in place.

    So, technically, you can say it's recommended that you do so.

    Seriously, do you have any citation for that recommendation? My understanding was that as long as you take frequent breaks to change your focal length to long distances, the risk of long-term vision* damage was low.

    *I do recall reading something about problems with circadian rhythms due to electronic displays, however. But not permanent, IIRC... circadian rhythms can be reset in a few weeks.

    --
    "Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
  7. Reality Distortion by vivin · · Score: 4, Funny

    So, if you hold an iPhone at the typical 12 inches from your eyes that works out to 477 pixels per inch and at 8 inches it's 716 ppi. You have to hold iPhone 4 out about 18 inches before it falls to 318 ppi. So the iPhone has significantly lower resolution than the retina

    No, no, no! Mr. Soneira has it all wrong! The math works out if you are inside a reality-distortion field, since all physical laws either change or do not apply inside said field!

    --
    Vivin Suresh Paliath
    http://vivin.net

    I like
  8. Re:Real Ratina Display by man_of_mr_e · · Score: 4, Funny

    Umm.. who holds their iPhone 10 inches from their face? Maybe blind people.. but I usually have mine out at armish length.. 18-24 inches.

  9. Re:12 inches? by need4mospd · · Score: 5, Funny

    My boss just walked by my desk and saw me holding a 12" drafting scale and cell phone to my forehead. Thank you slashdot.

  10. Re:Real Ratina Display by blai · · Score: 5, Funny

    You are aware of what kind of person would be laying you because of your iPhone, right?

    Hopefully female :)

    --
    In soviet Russia, God creates you!
  11. taking things too seriously? by Sloppy · · Score: 4, Funny

    Next you'll be proving that, if you examine the facts carefeully, Pepsi isn't really the choice of a new generation.

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    As copyright owner of this comment, I authorize everyone to defeat any technological measure which limits access to it.
  12. Re:Real Ratina Display by forceman130 · · Score: 4, Funny

    I just assumed that it meant the screen was made from the retinas of baby seals and bunny rabbits. Or maybe ex-Foxconn factory workers.

    --
    Wow, a 7 digit ID - let that be a lesson in the perils of procrastination.