Dr. Raymond Soneira, creator of the DisplayMate screen calibration utility and a leading expert on display quality, aims to erase the confusion. On March 19, he’ll be publishing an “iPad Retina Display Shootout” that includes an in-depth analysis of the new iPad’s ultra-high-resolution display. Here are are some highlights we pulled from a brief preview of the analysis, which Soneira published Wednesday.
To start, Soneira addresses the fact that the iPhone 4/4S Retina display has a pixel density of 326 ppi (pixels per inch), whereas the new iPad comes in at just 264 ppi. “To qualify as an Apple retina display, the new iPad does not require the same ppi as the iPhone 4 Retina display because it is typically held further away from the eye,” Soneira writes. (In case you were wondering, the original iPad and iPad 2 have a pixel density of 132 ppi.)
Considering the distance an iPad is held from one’s face — 15 to 18 inches as opposed to 12 to 15 inches with the iPhone — the iPad could have a pixel density as low as 240 ppi, and still be considered a Retina display by Apple’s standards, Soneira writes