Understanding Anti-Aliasing

[daveJ]

SvennoJ said:

I checked their retina claim once and came to this:
"The iPad 4 retina display needs to be viewed at a distance of 43.4" to make it a true retina display."
At that distance you see it at 100cpd.

For comparison a 1080p 40" set needs to be viewed from 17ft4" away to see it at 100cpd. That's the upper limit and anti aliasing becomes irrelevant.

like I said it depends on how good the vision of the person has, I assume the 17'4" is for imperfect 20/20 vision for 20/12 vision (common for teenagers)  yuou need to be ~29 feet away