The 5.5" smartphone vs. 27" LED TV is an apples to oranges comparison. A TV does almost exclusively video which requires much lower resolution to be perceived as sharp compared to still images and graphics. Try putting your Android homepage and app drawer on your TV and see how "HD" it seems. The key is perceived sharpness between still and full motion video. It's also why heavy compression is much more tolerable in a frame of video than any still image. When things are moving, your eye doesn't notice the imperfections.
Oops!!!
One more thing though... most displays, TVs, monitors, whatever elses are usually not viewed as close as a smart thingies making their pixelege less apparent. Betcha didn't know that either :vroam:
Can't tell if joking or unaware that everyone knows that.
It's called mapping.
A 60" display at 10' is going to occupy some fixed area measured in horizontal and vertical angles.
The angular distance between pixels is very easily calculated from there.
If that angle per pixel is below the angular resolution of your eyes, you won see any dots, just an integrated picture.
Scale down the diagonal size and at the same time, scale down the distance.
Did you materially change the pixel to pixel angle?
If the answer is no, or if the answer is that the angle got smaller, you'll see no dots.
Wear a patch over one eye, walk around, function for a day.
You will find you have no depth perception, you've lost stereoscopic vision.
Today you learned - the resolving power and accuracy of your eyes is based on one eye's angular acuity. The relationship of resolution you can see, dots, screen size and distance is a by-product of a basic, known range of angles.
http://en.wikipedia.org/wiki/Visual_acuity
How can you find out ahead of time what to expect for what distances?
http://carltonbale.com/home-theater/home-theater-calculator/
The issue does not go away and not count for TVs because they're showing movies and not stills. That's magical thinking, not true.
When the pictures move, your eyes immediately choose whether to pay attention to the horizontal or vertical angle for details. And your eyes, by design, always pay attention to the same relative angle as everyone else - unless your eyes open side to side and not up/down.
In other words, they see lines separated by the same angle that the pixels are.
In such a case, we need only specify the line resolution. If the lines don't flicker in an alternating pattern, we say that the display is progressive and follow the line resolution with the letter p.
720p, 1080p, 1440p.
When the movie slows down to a still picture, your brain gets time to pay attention to both angles, horizontal and vertical.
That's the only difference.
Eyes transduce light into electrical nervous system signals. You don't really see with them.
You see with an area of your brain called the visual cortex.
Your GPU.
And your GPU has different sensitivities to errors when the picture is moving or the picture is still.
For displayed content, we usually either experience jpeg compression errors (unless your pictures are lossless and not jpg files) on stills, or, motion artifacts on movies.
Most of what people complain about as visible dots are those errors.
The biggest difference on high resolution displays that dots affect is text aliasing - where curved letters don't look right. That's it for that.
Hope this clears things up.
If on the other hand, you were trolling for fun, you got me.
A 5.5" smartphone display vs 27" LED monitor *or* TV is exactly an apples to apples comparison.
No oranges at all.
