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SED TVs delayed again
boykster:
--- Quote from: Howard_Casto on May 31, 2007, 03:48:23 am ---This is true.... but so do crt televisions and since sed's are based on the same tech, they probably would too. The future is already here, and you are probably using it. LCD televisions still give a superior picture to all three and the image doesn't degrade over a reasonable amount of time.
--- End quote ---
I totally disagree here. LCD's are clearly inferior on 3 major points vs either plasma OR CRT:
1) Black Level - even the cheapest off-brand plasma will have a deeper black level than a high-end LCD
2) Off-axis color shift and brightness dropoff. This has gotten better on later gen LCD's, but it still exists. Plasmas and CRT's, being emissive technologies do not suffer from this very annoying phenomena
3) light uniformity. This doesnt plague all LCD sets, but many. Next time you're at a showroom with a bunch of LCD's, put as many of the sets as possible on a "black" screen and look at the even-ness of the screen. I'll bet that 10-20% of them show some sort of light distribution abnormality.
LCD totally beats plasma and CRT on sharpness, resolution, and is catching up on "refresh". LCD's have been notorious for motion blur, but that's gotten much better, so I left it off the list. The issues I just listed are still real. I'm in the market for a 27"-32" LCD for my gym and I've been to tons of showrooms demo-ing sets.
:dunno
shorthair:
On 3D, again: well, I said that POV is a critical factor. Also, I think there are two general possibilities:
1. laser beam interference that would create an image in mid air. Maybe this is an absurd idea, but an intuition on my part.
2. some kind of spatial distortion effect. Of course, not only would this require exotic physics, it could also be a weapon. Hmm.
3. Most likely, and near-future-possible: as postulated in, the now relatively old, VIRTUAL REALITY (Reingold, '90), as well as described in Hamilton's Night's Dawn Trilogy - lasers shown into your eyes that create an image. Particularly in the latter case, there are AV pillars and one merely has look at them (it's some kind of omni-directional) to see its content.
patrickl:
I saw one of those 3D projection screens. Maybe it wasn't a hologram, but it looked distinctly 3D. Just from a single screen and no glasses or such.
RayB:
Can't believe you guys are arguing about 3D television..... ::)
Howard, LCD is not superior to CRT. Do you have an LCD monitor? Open up notepad and type letters with straight vertical lines, like this:
||||||||lllliiiii][[[[]]]].....
You'll see some weird colorations appear on the letter edges. Sometimes greenish, sometimes purpleish. On a quality CRT it's sharp, crisp with no such color ghosting.
patrickl:
--- Quote from: RayB on May 31, 2007, 08:46:35 pm ---Can't believe you guys are arguing about 3D television..... ::)
Howard, LCD is not superior to CRT. Do you have an LCD monitor? Open up notepad and type letters with straight vertical lines, like this:
||||||||lllliiiii][[[[]]]].....
You'll see some weird colorations appear on the letter edges. Sometimes greenish, sometimes purpleish. On a quality CRT it's sharp, crisp with no such color ghosting.
--- End quote ---
I'm afraid that is an artifact of cleartype or the way that windows handles fonts or something. I only see the effect when I have my letters anti aliassed. I don't see it in Notepad, but only in the letters you typed on this page. (Only on the left brackets btw)
Or it could be that the LCD screen you saw wasn't synced properly.
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