Originally Posted by Selden Ball
Some people are sensitive to the "screen door" effect which can be seen with some projectors and large screens. A 4K projector, if you can afford it, should eliminate that problem.
Actually, if you sit close enough you can see it with them too.
If you really
want to eliminate SDE, consider getting a Panasonic pj. They have a fantastic technology that they advertise extremely poorly and inaccurately I might add, but boy does it work
. "Smooth screen" they call it. You can walk right up to the screen and unless you are like a foot away, you just don't see pixels. I'm on my 4th incarnation of it and I doubt I'll ever abandon the technology which is proprietary to them.
The problem isn't the number of pixels, 1080x1920 is fine for our current sources, the problem is fill factor [the ratio of the pixel area size to the black grid lines which surround each one]. This is a bit off topic but if you'd like a better technical explanation of what it, Smooth Screen does, I can link you to a post I wrote about it which trumps any explanation ever given by Panasonic themselves.
Chris is right, 4K is pretty much worthless until the 4K, erm, I mean "Ultra HD" sources arrive, at least with most material.