Hi,
I got a samsung plasma 2 weeks ago and i´m still uncertain if this is normal on all plasmas technologies or only on my model or what?

I went to the store and saw this happened on both samsungs and 1 panasoinc they had on the showroom.

it´s hard to explain but this is the best descrition i found:

Dithering is a technique used in computer graphics to create the illusion of color depth in images with a limited color palette (color quantization).

Dithered images, particularly those with relatively few colors, can often be distinguished by a characteristic graininess, or speckled appearance.

I´m not talking about dark dithering, were you can see little dots dancing. i mean fixed dots.

On my set if i´m too close i can see this on some images. usually this is more noticible on darker scenes, with low greys.

like this:
http://tbn0.google.com/images?q=tbn:dLVAaZ81a63BRM:http://p-userpic.livejournal.com/51392147/908970

Of course is not that big, and on that picture is not a perfect example because but i think it illustrate my point. The transition it´s not smooth as my old lcd... i can see this "dots" on some areas when they have some transition from color A to B.

this is an exageration and i only see it if i put my nose close to the tv, but it still there.

anyway, sorry if this is a stupid question but i search the forum and i found nothing.

Yes, they all do.

Although it's less noticeable, I think that all LCDs TV use it as well, since the TN type panels used by TVs can't display the full gamut of colors.

Yes, they all do.

Although it's less noticeable, I think that all LCDs TV use it as well, since the TN type panels used by TVs can't display the full gamut of colors.
thanks, this is my first plasma and i was starting to freak out there was something wrong with my plasma. I went o the store saw 2 same models as mine and same thing. I also checked on a old panasonic and it had the same thing. I coulnd´t pause the picture but it was noticible on same areas.

I see three things in that tiny picture

false contour
dither snow (really another name for false contour)
video noise (the snow part of it)

There are three ways to attempt to prevent that in the TV set.
1. The Better the "video processor" the cleaner the picture will be.
2. The more "shades" the set can make the better (like panasonic 800U has 5,000+ shades-very important the darker parts of the picture).
3. How "clean" the digital tuner is OR the "other souce" that might be used (bluray, STB, etc.

I see three things in that tiny picture

false contour
dither snow (really another name for false contour)
video noise (the snow part of it)

There are three ways to attempt to prevent that in the TV set.
1. The Better the "video processor" the cleaner the picture will be.
2. The more "shades" the set can make the better (like panasonic 800U has 5,000+ shades-very important the darker parts of the picture).
3. How "clean" the digital tuner is OR the "other souce" that might be used (bluray, STB, etc.
i understand, but this is a problem with the Model/Manufacture, sometimes with the technology. it´s not that my tv is "defective".
This is what it worrying me.

My tv was very cheap and it was the only plasma option on my country. But if the tv is defective then i could claim to samsung, but if this is not a defective.. then i´m ok and i´ll try to live with this.

Dithering doesn't always have to look grainy or speckled. You can do a 10-bit --> 8-bit dither to ease some color banding.

Dithering doesn't always have to look grainy or speckled. You can do a 10-bit --> 8-bit dither to ease some color banding.
I understand, but i guess my Display panel is not that good.

The quesiton is, if even some plasma does this a lot better, this is something done by plasma technology. So my tv is working fine, is just that sucks as doing this?

Hi,
I got a samsung plasma 2 weeks ago and i´m still uncertain if this is normal on all plasmas technologies or only on my model or what?

I went to the store and saw this happened on both samsungs and 1 panasoinc they had on the showroom.

it´s hard to explain but this is the best descrition i found:

Dithering is a technique used in computer graphics to create the illusion of color depth in images with a limited color palette (color quantization).

Dithered images, particularly those with relatively few colors, can often be distinguished by a characteristic graininess, or speckled appearance.

I´m not talking about dark dithering, were you can see little dots dancing. i mean fixed dots.

On my set if i´m too close i can see this on some images. usually this is more noticible on darker scenes, with low greys.

like this:
http://tbn0.google.com/images?q=tbn:dLVAaZ81a63BRM:http://p-userpic.livejournal.com/51392147/908970

Of course is not that big, and on that picture is not a perfect example because but i think it illustrate my point. The transition it´s not smooth as my old lcd... i can see this "dots" on some areas when they have some transition from color A to B.

this is an exageration and i only see it if i put my nose close to the tv, but it still there.

anyway, sorry if this is a stupid question but i search the forum and i found nothing.Spatial dithering, Temporal dithering (dither rotation), Error diffusion and other halftoning methods are all used in varying degrees in modern plasma displays. Manufacturers are claiming up to 5000 colors per subpixel. 80-99% of those colors are virtually created through halftoning.