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Lensrentals16-Nov-2013 18:48
Retina Macbook Pro (MBP) pixel-peeping: I've imaged the individual
R, G, and B pixels of the high-density Retina MBP IPS (in-plane
switching) display. You'll note some sub-pixel features: it seems 5-8
'strips' per color pixel. For ease of visualization, I've desaturated
some of the blue pixels & enlarged one such desaturated blue pixel in
the inset - here you can easily count 8 such strips. My measurements
(based on the 340nm/pixel measurement from the 'Ruler' shot) indicate
that each color MBP pixel is approx. 30µm across; that would make each
of the 8 sub-pixel strips 30/8 = 3.75µm across. Hence, it would seem
that we've resolved ~4µm features here.

Sanity check: Retina MBP panels have a pixel density of 220ppi. That
equates to 1 pixel per 115µm; however, since each pixel consists of R,
G, B pixels, each color pixel should be at most 115/3 = 38µm across.
38µm is consistent with my measurement of ~30µm based on the
magnification I achieved (determined by the 'Ruler' shot above) - so
that was a satisfying reality check!
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