I am hearing smartphones are going to get 1280x720 screens!
Now these screens are also going to be 4" so at 1280x720 resolution wouldn't the screen be too small?
What does it matter? You can't possibly make the display itself more noticeably sharp than the iPhone 4's. Its pixel-density is the boundary of human perception. It's like making a black hole blacker. What's darker than something that actually entraps light!?
18-20 inches...as in distance from the screen to the users' dopey face?
No matter how I look at the iPhone 4, I am unable to distinguish a single pixel. Once it is within four-inches, it becomes impossible to focus and, thus physically impossible to accomplish.
Also, we're talking pixel-density, not pixel amount.
What does it matter? You can't possibly make the display itself more noticeably sharp than the iPhone 4's. Its pixel-density is the boundary of human perception.
No matter how I look at the iPhone 4, I am unable to distinguish a single pixel. Once it is within four-inches, it becomes impossible to focus and, thus physically impossible to accomplish.
I have 20/12 vision and I cannot distinguish pixels a foot away, unless I let my eyes go out of focus.No. Not even Jobs claimed that the iP4 display is at any absolute boundary of visual perception.
What he was repeating was a common rule of thumb that at 12" and over 300ppi, a person with normal (but not extremely good) eyesight could not make out individual pixels... that is, their retina could not physically make the distinction.
That's what gave us the historical idea of 300dpi being called "print quality". (Of course, today's laser printers give even better resolution, and you can indeed see the difference at times.)
What's your eyesight? Nearsighted folk can see pixels VERY easily at such a close distance.
The whole point is that eyesight resolution is not an absolute number. Not only does it differ between people, but the definition itself gets strained when you're talking about the ability of the eye to move around and "see" more than a simple snapshot, plus the brain's ability to merge and smooth information, plus a whole physical subset of research into what the eye really uses to figure out colors, luminance and boundaries.
If you don't like the iPhone 4, don't buy it.