Here are some photos of 3 mobile phones’s displays with Pentile RGBG matrix AMOLED. For more info on PenTile matrix AMOLED, please see this wiki.
Samsung Galaxy Note = 5.3 inch 1280 x 800 resolution (285 PPI) Nokia Lumia 800 = 3.7 inch 800 x 480 resolution (252 PPI) Samsung Omnia 7 = 4.0 inch 800 x 480 resolution (233 PPI) (This is same screen as Samsung Galaxy S1)
Note – As I don’t have a very high quality lens on my Panasonic GH2 camera nor a macro lens ,the photos aren’t as good as I hoped it would be but it should still show you what pentile-matrix looks like up close on these phones and also show you minor differences between the 3 phones of the same text and nearly the same size. You can click on each photo in this article for a much larger version. Please ignore the slight blurriness in some photos as that’s not due to the screen but due to being out of focus. Also ignore the colors as that may be due to slight difference in white balance of each photo.
100% crop – Galaxy Note vs Lumia 800 vs Omnia 7
All the photos are in the order of: Left – Galaxy Note Middle – Lumia 800 Right – Omnia 7
Please click on each “W” image for a much larger 100% crop version.
Above image is already 100% crop size. Please click on each phone’s image for a much larger non-100% crop version.
Notice how each of the Note’s characters that are roughly the same size (or even smaller) actually consists of more pixels than the Lumia 800 or Omnia 7. Just from the enlarged 100% crop photos, it’s not very easy to tell just how much difference there is between each other. But in real life where it’s much smaller, this subtle difference makes the Note’s higher PPI display to be far more crisper and pretty much get away with having a pentile-matrix AMOLED even when reading even the tiniest of texts. This doesn’t so much apply on the Lumia 800 and more so on the Omnia 7 due to their lower resolution and PPI. However, Lumia 800 with its slightly higher PPI is still better than the Omnia 7 and it is definitely noticeable when looking at small texts.
Many people just bad-mouth pentile matrix AMOLED for what it is but when the PPI gets over 250 PPI like on the Lumia 800, the visual negatives are very much minimized and quite difficult to tell unless you point it out exactly. When it’s something like 285 or over like that on the Galaxy Note or Galaxy Nexus (315 PPI), it practically becomes a non-issue and now you are just pixel peeping just for the sake of pixel peeping. Unless you always use your phone from about an inch away from your eye. Well, my naked eye can’t even focus that close so if you can, I think you have super powers. =p