[TheLoneWolfling]

At 20/20 vision, we can resolve ~300 pixels/inch at 10-12 inches from the eye. [1]

For a 6" screen, that works out to ~1800 pixels. So maybe not 4k, but the next step down from 4k generally is 1080p, which is less than the figure I gave above.

So yes, there is a point.

(And that's not getting into other factors either, such as panning and stroboscopic effects.)

[1](http://en.wikipedia.org/wiki/Visual_acuity#Physiology)

[TD-Linux]

6" is the diagonal measurement. So that's 1800 pixels diagonally. 1080p is 1920x1080, so about 2200 pixels diagonally.

I absolutely love the look of the crisp text on the Nexus 6, but I don't think that it would be very visible in most video content.

[TheLoneWolfling]

Oh ok. I retract that argument, then.

Though one thing I will still mention is panning. While you're panning, at sufficiently high framerates you're still effectively having 1 pixel for every 2. (Look at what happens when you draw a one-pixel-width horizontal line. In general, with non-integer position, it'll take up 2 pixels high, in some proportion.)

Still not an argument for quite as high as 4k though.