 BichonPremium,MVM
join:2002-10-10
Freehold, NJ
3 edits | reply to Irish Shark
Re: TV Codes said by Irish Shark:
Plasma blows that stuff away.
Plasmas look great showing bright colorful demo material in the store. But for dark, low light scenes, the picture deteriorates into muck. Plus there is concern about burn-in.
LCDs can't handle fast motion well. They just plain get blurry. Not to mention the "screen door" effect on large screen LCD projection sets. And they don't handle black levels very well either.
DLPs suffer from the rainbow effect. (Watch what happens when you shake a camera in front of the Samsung HLN4365W DLP television. »ftp://ftp.extremetech.com/pub/extremet···Clip.wmv)
No clear winner - each technology has its advantages and disadvantages. |
|
 mack1951Universal Soldier
join:2000-04-18
Bayonne, NJ | Thats why I'll take a good old fashioned 32 inch Sony CRT any day.;)
--
THE ROAD: Romans 3:23, 6:23, 5:8, 10:9 |
|
 Irish SharkPlay Like A Champion TodayPremium,MVM
join:2000-07-29
Las Vegas, NV
kudos:3 | And I'll keep my 40" Mitsubishi. Too bad I cannot find a 50" or so CRT HDTV (letter box) and I would be happy. |
|
 Jord413
join:2002-01-05
Parsippany, NJ | reply to Jord413
BTW, thanks to Rick. I just got a chance to try the Toshiba codes and code 0170 worked on my unit.
--
Beware of programmers who carry a screwdriver! |
|
 Tursiops_GTechnoidPremium,MVM
join:2002-02-06
Norwalk, CT
1 edit | reply to Bichon
said by Bichon:
Plasmas look great showing bright colorful demo material in the store. But for dark, low light scenes, the picture deteriorates into muck. Plus there is concern about burn-in.
That depends on that particular model's "Contrast Ratio".
The ones that you describe have a relatively low (500:1 or less) contrast ratio. Models with a 1000:1 to 3000:1 contrast ratio (the higher, the more expensive, of course)  don't have that problem.
Unlike CRTs, "Burn-In" on a Plasma set isn't necessarily irreversible. in fact, most burn-in can be "erased" by displaying a flat grey screen for a few hours (or overnight).
Check out this site for lots of info on Plasma TVs:
»www.plasmatvbuyingguide.com/plasmatv.html
- Tursiops_G.
--
If at first You don't succeed... Use a Bigger Hammer! |
|
 IllIlIlllIllEliteDataPremium
join:2003-07-06
Lindenhurst, NY
kudos:7 | reply to Bichon
said by Bichon:
DLPs suffer from the rainbow effect. (Watch what happens when you shake a camera in front of the Samsung HLN4365W DLP television. »ftp://ftp.extremetech.com/pub/extremet···Clip.wmv)
well, i for one, wont be moving my head back and forth like that, the way whoever taped it on the video, while watching in the first place |
|
 dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | reply to Irish Shark
said by Irish Shark:
Plasma blows that stuff away.
Until they get burn-in then it sucks, plus their relatively short lifespan makes them unattractive at the prices they want for em.
--
You can never be too rich, too thin or have too much Bandwidth |
|
Irish SharkPlay Like A Champion TodayPremium,MVM
join:2000-07-29
Las Vegas, NV
kudos:3 | said by dvd536:
said by Irish Shark:
Plasma blows that stuff away.
Until they get burn-in then it sucks, plus their relatively short lifespan makes them unattractive at the prices they want for em.
As Tursiops_G posted above the burn-in can be fixed. As far as a "relatively short lifespan", 10 years or so is that bad.
Heck by then, all the stuff that is on the market now will be junk.
--
"A man who was fond of wine was offered some grapes at dessert after dinner. "Much obliged," he said, pushing the plate aside; "I am not accustomed to take my wine in pills."Jean Anthelme Brillat-Savarin, The Physiology of Taste |
|
|
|
BichonPremium,MVM
join:2002-10-10
Freehold, NJ | reply to Tursiops_G
said by Tursiops_G:
said by Bichon:
Plasmas look great showing bright colorful demo material in the store. But for dark, low light scenes, the picture deteriorates into muck. Plus there is concern about burn-in.
That depends on that particular model's "Contrast Ratio".
The ones that you describe have a relatively low (500:1 or less) contrast ratio. Models with a 1000:1 to 3000:1 contrast ratio (the higher, the more expensive, of course) don't have that problem.
Let me quote from the more "fair and balanced" AVSforum plasma buying guide:
"Plasma manufacturers usually quote brightness and contrast numbers for their panels but the contrast numbers are usually wildly optimistic. The contrast numbers are also affected by the contrast setting. Out of the box most panels have contrast set too high. For example, the Panasonic TH42WD4UY has a quoted contrast ratio of 3000:1. One member's panel was calibrated and measured at 1300:1 before calibration and 650:1 after calibration."
"What is false contouring, banding and the "Green Moss" effect?
They are all the same thing. There's also the terms "solarization", "Creeping moss" and "posterization". Basically, all video information is composed of 3 fields: Red Green and Blue. Plasma creates various shades of these colors by using "pulse length modulation", a technique by which the time a subpixel (red, green or blue component of a particular pixel) is lit for a certain amount of time. The ratio between the time that the subpixel is on to the time it's off - determines how the human eye will decide how bright it is. In actuality, the brightness of the subpixel is constant, it's the amount of time it's on or off that's changed.
In order to produce an actual color, the 3 different subpixels need to produce at least 24 bits of color (65536 shades). That means that each subpixel must be able to produce at least 256 shades. You can test this by viewing a Black and white gradient (a gradient starting with black and gradually going through the grayscales until it turns white). There will only be 256 shades of gray on a plasma (except the most advanced ones with 9 or 10 bit processing!).
Trouble is, plasmas (particularly the earlier models) have a very hard time producing colors close to the black part of the grayscale. This is because the human eye is able to distinguish between very tiny changes of colors at the edge of the gradient (i.e., the color response of the eye is exponential not linear). That means it's much harder for the plasma to produce colors at the lower end of the scale because the subpixels would be almost always off at that point...
When the plasma attempts to display those colors, it simply comes up with a close replicant of that color instead of the true color. Usually, it turns out to be a very dark reddish color or a dark greenish color (hence the term: green moss). When very dark scenes are shown on such plasmas, objects that should be very dark on the screen appear like dark green or brown/red blobs...
quote:
Unlike CRTs, "Burn-In" on a Plasma set isn't necessarily irreversible. in fact, most burn-in can be "erased" by displaying a flat grey screen for a few hours (or overnight).
Check out this site for lots of info on Plasma TVs:
»www.plasmatvbuyingguide.com/plasmatv.html
- Tursiops_G.
Don't confuse "temporary image retention", a temporary burn-in caused by displaying a high contrast static image for a relatively short time with permanent burn-in, caused by displaying such an image (e.g. the black bars of a 4:3 AR image on a 16:9 display) over a long period of time.
If burn-in were truly temporary, as you allege, the manufacturers wouldn't exclude burn-in damage from their warranties. And if you check, I think you'll find that virtually all manufacturers consider burn-in damage to be product misuse, and disclaim responsibility for it. |
|
BichonPremium,MVM
join:2002-10-10
Freehold, NJ | reply to IllIlIlllIll
said by IllIlIlllIll:
said by Bichon:
DLPs suffer from the rainbow effect. (Watch what happens when you shake a camera in front of the Samsung HLN4365W DLP television. »ftp://ftp.extremetech.com/pub/extremet···Clip.wmv)
well, i for one, wont be moving my head back and forth like that, the way whoever taped it on the video, while watching in the first place
If you are a person who can't tell whether your CRT computer monitor is set for 60hz, 75hz, or 85hz refresh rate, you probably won't be able to see the rainbow effect either. But if you are a person who has less "persistance of vision", there is a good chance you will see the rainbow artifact if you move your head quickly while viewing an image that has bright, well defined, thin lines on dark backgrounds. |
|
 djrobx
join:2000-05-31
Valencia, CA
kudos:1
 ·Verizon Wireless..
 ·RoadRunner Cable
 ·AT&T U-Verse
 ·VOIPo
·PHONE POWER
| reply to Jord413
quote:
But for dark, low light scenes, the picture deteriorates into muck.
Actually LCD and DLP don't have great blacks either. Panasonic and Fujitsu Plasma has the best black levels out of the plasma group. The only technology with really good blacks is good ole' CRT!
Burn in - CRT does that too. People rightfully are worried about it with their $3000-$7000 plasma screens, but it's just as much of an issue on the bigscreen CRTs that you see everywhere. Use it reasonably and it won't be a problem.
Plasma lifespan - newer ones are rated at 60,000 hours. If you watch TV for an average of 4 hours per day the set will get to half brightness in 41 years. And even at that point it's probably still usable.
-- Rob
--
\\ROB - a part of the SCB local network |
|
| reply to Jord413
I have two Apex televisions, and I found that the codes for Toshiba will work to operate both televisions! There were two Toshiba codes in my remote guide, but the first one that I tried worked. |
|
Reviews:
 ·Verizon Online DSL
·Optimum Online
·EarthLink
| reply to Irish Shark
said by Irish Shark:
Jord, not everyone can afford a $10k 50" plasma.
My big TV is a 20" JVC. I don't even have a DVD player.
--
"...Saddam Hussein still has chemical and biological weapons..."
» George W. Bush, October 7, 2002. |
|
Irish SharkPlay Like A Champion TodayPremium,MVM
join:2000-07-29
Las Vegas, NV
kudos:3 | said by Bobcat:
said by Irish Shark:
Jord, not everyone can afford a $10k 50" plasma.
My big TV is a 20" JVC. I don't even have a DVD player.
Yea, so?
--
"A man who was fond of wine was offered some grapes at dessert after dinner. "Much obliged," he said, pushing the plate aside; "I am not accustomed to take my wine in pills."Jean Anthelme Brillat-Savarin, The Physiology of Taste |
|
