Display: the underdeserved hype around resolution, and the overlooked importance of color accuracy
Lately, smartphone makers have gone on a wild race to increase the resolution of smartphone displays: we saw displays with a resolution of 720 x 1280 (720p), then 1080p, then quickly another jump to a Quad HD (1440 x 2560 pixels) resolution, while Apple - puzzlingly for some - sticks with a 4.7” display with a resolution of 750 x 1334 pixels. The average spec-counting crows are quick to summon hell and high water on Apple for such allegedly short-sighted decision that seemingly puts the iPhone in the stone edge of technology. The truth, however, is more complicated than that, as mathematical analysis shows that the human eye finds very little visible difference between resolution going over pixel densities of 320ish ppi (the iPhone 6 has 326ppi).
What gets much less attention - while at the same time being a factor with such huge variances with big significance for the quality of an image - is the color accuracy of displays. Apple's iPhone 6 display delivers very good color with none of the plaguing issues like ghosting that are typical of some AMOLED displays. Comparatively speaking, it is among the best smartphone displays in terms of color calibration.
This does not mean it's perfect: being an avid night reader, I've found the level of minimum brightness on the iPhone 6 to be too bright, which makes for an uncomfortable, eye-strain-inducing experience. Also, color saturations are slightly off and the screen is just slightly bluish, whereas I would prefer seeing Apple stick closer to the industry standard color temperature with less of that cold tonality.
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