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ATTN: Pursuers of LCDs with proper 4:4:4 chroma handling

post #1 of 5
Thread Starter 
Besides text and the color red, what else is most noticeable to the human eye between an LCD TV that resolves native 4:4:4 chroma content and another LCD TV that subsamples 4:4:4 chroma data to 4:2:2?

Are there any fair picture comparisons online that show, for example, two identical 1920x1080 images (aside from one being 444 and the other 422 subsampled) so a person can see if this would be an issue for him/her?

The comparison pic I've seen here (involving a scene from the PS3 game Uncharted) doesn't seem controlled properly because the images were taken from two different television sets that may have vastly different processing going on in more aspects than just the chroma.
post #2 of 5
What 4:4:4 source content do you have and over what connection type? The display should have a different color decoder based on the input signal type.
post #3 of 5
Thread Starter 
It would be with a PC source (Windows XP) and XBox 360/PS3 games, all through HDMI.
post #4 of 5
Quote:
Originally Posted by shoopdopp View Post

It would be with a PC source (Windows XP) and XBox 360/PS3 games, all through HDMI.

There's even quite a bit of possible variance on the PC side. Nvidia vs ATI. Using the video card's hdmi output compared to using it's DVI output makes all the difference sometimes.

Using ATI and DVI-to-hdmi gives you a much better chance of success with 4:4:4 btw.

Then of course the usual driver revision + settings etc etc.

Not sure if you've seen these related threads yet:

- http://www.avsforum.com/avs-vb/showthread.php?t=1292135
- http://www.avsforum.com/avs-vb/showthread.php?t=1367796
post #5 of 5
I spent a fair amount of time investigating the Chroma issue setting up some LCD TV's as computer monitors. To my eyes, the critical issue is text clarity. It always boiled down to sharp text = chroma done right, fuzzy text = chroma mishandled. It really is no more complicated than that.
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