Originally Posted by walford
I felt it imporant to note that the new Apple IPad achieves it's excellent PQ with about 15" viewing distance which results in about 60 pixels per degree so any viewing distance that results in about 60 pixels per degree or higher could have the excellent PQ of the Retina displays. Even the Ipad2 which has about 1/2 of the resolution or 30 pixels per degree has pretty good PQ which is not grainy.
I have to disagree. I have always found my iPad 2 grainy, just like my 1080p HDTV. Even the new iPad is not high enough resolution to hide the pixels. (But it’s close)
I’ve not been following this topic recently, but just saw this great comparison at MacRumors
and had to post it here.
A comparison between the iPad 2 and new iPad with a non-retina app using pixel doubling:
Even though the source is the same, clarity is significantly improved by doubling the pixel density. This is exactly how 1080p content will look on a 4K display without
using any kind of fancy upscaling.
I think that should settle any argument that a 4K native display would be detrimental to image quality with non-native sources. This isn’t like scaling SD to HD, it’s a simple 4x resolution increase.
Even without 4K native material (though my PC supports 4K already) I can’t wait for 4K displays to become widely available, and hopefully 4K OLEDs won't be too far off.