iPhone 4 doesn't have Retina Display, says screen expert

Apple claims exaggerated says screen specialist

A mobile screen expert has debunked Apple's claims that the new screen on the iPhone 4 is a "Retina Display" that boasts more pixels than the eye can see.

Dr Raymond Soneira, who runs DisplayMate Technologies emailed PCWorld.com to explain that while Apple's IPS LCD screen is likely to be the best in production, it actually has a significantly lower resolution than the retina is capable of processing.

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In Monday's keynote address to the WWDC, Steve Jobs claimed that the new handset's 960x640 screen boasted so much detail that the human eye was unable to determine individual pixels. This seemed strange to us because a) we don't see in pixels and b) surely it depends on how far away the device is from the eye?

In his email Dr Soneira says that the iPhone 4 does not have a higher resolution than the retina and has accused Apple of exaggerating the specs.

He says (take a deep breath): "Steve Jobs claimed that the iPhone 4 has a resolution higher than the retina - that's not right:

"1. The resolution of the retina is in angular measure - it's 50 Cycles Per Degree. A cycle is a line pair, which is two pixels, so the angular resolution of the eye is 0.6 arc minutes per pixel;  2. 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 it out 18 inches before it falls to 318 ppi."

Basically, what he's saying is that you have to hold the handset at arms length before Apple's claims are met. Even then...

"The iPhone has significantly lower resolution than the retina. It actually needs a resolution significantly higher than the retina in order to deliver an image that appears perfect to the retina. It's a great display, most likely the best mobile display in production (and I can't wait to test it) but this is another example of spec exaggeration."

Apple's claim that their IPS screen is better quality AMOLED has also been attacked by Samsung who's Wave handset boasts the latter, saying that "structurally, IPS LCD technology (as seen on the iPhone 4) cannot catch up with AMOLED display technology.” Well that's Apple told.

Seems like Apple might have attempted to pull a bit of a fast one on Monday with its hype, luckily the world is on hand to debunk the myths. Still, it looks like a great screen.

Link:Apple (via PCWorld)

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