HDTV Picture Quality

Why when I use HDTV to watch my PC screen, it look like the color is not as nice (smooth) as I useing normal computer screen to watch my PC monitor.

When I see the icon, it looks better on my PC monitor, but not on my HDTV why?
mawinghoAsked:
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PaulD77Commented:
What is your video card? does it have HD/TV settings? What kind of cable are you using to hook up your TV?
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CallandorCommented:
If you look at a bigger screen with the same resolution as your computer monitor, it will not look as smooth - that is a general rule.  Bigger screens need more pixels to look smooth.

If your TV is displaying a different resolution than your computer monitor, it could look worse.

If your TV is changing the aspect ratio of the original image, it will not look as smooth.
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xemaCommented:
A few thoughtscomplementig Callandor comments
When you use the TV did you match the output to the TV resolution?
What are the color settings on the TV?
If the resolution of the TV is correct the distance between pixels it's bigger than the distance of the pixels on the PC monitor, as an example
PC monitor 1920x1080 21" vs TV 1920x1080 37", the following consideration is not accurate as the measurment is diagonal and I'm takeing it lineal, but will give you an idea
21/1920=.0109  37/1920=.0192 so the distance between pxiels it's almost the double.

Also most TV's have color presettings, play with them untill you get a better color schema
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mawinghoAuthor Commented:
I am using DVI cable to HDMI cable
My original PC monitor is 22'
My HDTV is 26'
My HDTV brand and model is Oliveria PA260SXE
My Display Card is Nvidia GeForce 9800 GTX
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CallandorCommented:
Your TV is an Olevia PA260SXE http://www.price.com.hk/product.php?p=133405, capable of 1920x1080.  I am guessing your monitor is capable of this as well.  The TV is a bigger display of the same picture, so the spacing between pixels is greater, if you are using the same resolution.  That's why it looks better on your monitor.  Depending on what monitor you are using, it may have a sharper picture than the Olevia also.
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mawinghoAuthor Commented:
My monitor is Samsung 2243 NW Plus
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CallandorCommented:
I've got a Samsung 2245BW, and the image quality is very good.  The 2243NW is probably also very good.  Olevia is a good TV brand, so I think it's the size difference with bigger pixel spacing.
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mawinghoAuthor Commented:
How can I make the pixel better?
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ZShaverCommented:
make sure your resolution on your PC is set to 1920x1080

color differences may be hard to avoid, different panels especially among different manufacturers display different colors that's just how it goes

my wife's monitor seems dim and more red to me, but my monitor seems brighter and slightly more color balanced

the 32" LCD television i have also doesn't have nearly the color brilliance and accuracy as my 50" plasma

tv's also have additional technology in them like adaptive comb filters etc that intentionally blur out defects in TV signals... generally a picture on a TV won't look as nice as on a monitor
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mawinghoAuthor Commented:
Totally agree with u
By the way, is it becoz my cable problem or my video card cannot export a nice HD signal to the HDTV?
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mawinghoAuthor Commented:
Should I purchase another video card?
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ZShaverCommented:
well, another thing worth mentioning is that for that resolution, VGA cables are pretty noisy.
You could try a DVI cable if your computer and TV supports that or a DVI to HDMI cable. This way the signal stays digital to the TV. A normal monitor cable / vga cable is analog and might introduce noise as I said.

Verify also that the resolution being output by your computer is 1920x1080 to match the resolution of the TV.

A new video card won't make the picture any better if the resolution is 1920x1080 and you are using a dvi/hdmi cable.
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xemaCommented:
mawingho;
My comment from a previous post http://www.experts-exchange.com/Hardware/Displays_Monitors/Q_26566783.html
"My 2 cents;
HDMI only takes in account the vertical resolution, 720 or 1080 but doesn't consider the horizontal resolution, by using VGA or DVI you'll be able to get the most resolution out of your video card.
Most full HD TV are 1920 x 1080, if you go with HDMI you'll get ? X 1080, if you go with VGA you'll get 1920 x 1080.
So I'll will use the VGA output (blue on your picture) of the computer to a VGA port on the TV, if by chance you can get a TV with DVI I'll change the VGA for the DVI.
As garycase stated the limiting factor will be the video card/subsystem, if it isn't capable of delivering 1920x1080 with at least 24 bit depth you'll lose the HD experience, also you should follow garycase instructions regarding the audio conection."
I have set up three computers to an HDTV by means of the VGA connectors, and only in one, the biggest screen with the worst video card, I don't get a good picture.  Considering ZShaver comment I'll buy a good VGA cable.
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CallandorCommented:
>well, another thing worth mentioning is that for that resolution, VGA cables are pretty noisy

That depends on how well-made the cable is and how long the length is - the cheap VGA cables sold for a few dollars probably have some signal loss, but there's no reason a good VGA cable can't produce a picture indistinguishable from DVI or HDMI for anything smaller than 32 inches.  I have used a 35-ft VGA cable on a 100-inch full HD projector display and the quality was fine.  I have also seen some long DVI cables perform poorly and pick up RF interference  visible as green "sparklies" in dark areas of the screen.  In general, DVI should be better, but it's not a clear cut truism - it depends.
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