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Korean 27" IPS & PLS Monitors - Page 2

post #11 of 16
I'm curious for a 10bit color monitor too.
When you watch movies on PC, there is regularly banding in dark scenes and it's VERY noticeable IMHO. I would love to get rid of that.
10 bit color could make a huge difference. Basically you only have 256 shades of gray (sorry, not pun intended) and you can see the grades
very easily. Even if the movie is not 10 bit encoded you could have software have a smart blur instead of dithering.
post #12 of 16
Quote:
Originally Posted by Dejay666 View Post

I'm curious for a 10bit color monitor too.
When you watch movies on PC, there is regularly banding in dark scenes and it's VERY noticeable IMHO. I would love to get rid of that.
10 bit color could make a huge difference. Basically you only have 256 shades of gray (sorry, not pun intended) and you can see the grades
very easily. Even if the movie is not 10 bit encoded you could have software have a smart blur instead of dithering.
Adding information to something that's not there won't improve picture quality. Its like playing a 1080p movie on a 1440p screen... Given that the two screens are the same size and same colour space and calibration, 1080p will look better on 1080p screens than 1440p screens. 8bit colour sources are best rendered on 8bit display devices. Up sampling to 10bit doesn't get you any additional picture quality.
post #13 of 16
Quote:
Originally Posted by kevinsbane View Post

Adding information to something that's not there won't improve picture quality. Its like playing a 1080p movie on a 1440p screen... Given that the two screens are the same size and same colour space and calibration, 1080p will look better on 1080p screens than 1440p screens. 8bit colour sources are best rendered on 8bit display devices. Up sampling to 10bit doesn't get you any additional picture quality.

That's not necessarily true. While applying other video filters, 10 bit processing is beneficial on 8 bit content.

http://forum.doom9.org/showthread.php?t=146228
Quote:
visible benefits of more than 8bit processing:

I've some screenshots to demonstrate that higher than 8bit processing does help in specific situations, but the screenshots are too big to include them in this post, so I'll just post links instead. Please open the 3 links in different tabs of your browser and then switch between them. Please make sure that your browser does not rescale the images, so that there are no additional artifacts added by the browser scaling.

The following screenshots were made with images produced by the "madTestPatternSource" YCbCr test pattern generator. More details about that in this thread:

http://forum.doom9.org/showthread.php?t=146203

Now the comparison images:

ATI - VMR9 - colors.png
ffdshow 2867 - colors.png
Haali Renderer - colors.png
madVR 0.1 - colors.png

This test pattern consists of colored rectangles which form a smooth full screen color gradiant. Properly displayed you should be able to see the rectangle borders, but you shouldn't see any visible patterns in the color gradiants.

Now if you look at the ATI VMR9 and Haali Renderer result, you do see some kind of pattern. It doesn't look that bad on the screenshot, but in motion it's really ugly, because the pattern changes with every frame. The ffdshow result is even worse. The madVR result is exactly how the test pattern is supposed to look. It also stays stable in motion. The patterns in the color gradiants are caused either by too low processing bitdepth or by rounding or truncating the final processing result down to 8bit. The madVR output is only that smooth because it uses proper dithering.

If you like these kind of comparisons, I'd suggest to try "madTestPatternSource" yourself. It's contained in the madVR archive. Use it to compare image quality yourself with the renderer you're usually using.

ATI - VMR9 - smallramp.png
ffdshow 2867 - smallramp.png
Haali Renderer - smallramp.png
madVR 0.4 - smallramp.png

On a first check these 3 images might not look all that different. But if you look closer you should see two things: (1) The gradiants in the ATI VMR, Haali Renderer and madVR screenshots are smooth from left to right, while there are some unexpected bright bars standing out in the ffdshow gradiant. (2) In the ATI VMR, Haali Renderer and ffdshow screenshots the whole gradiant is covered by very small and faint vertical bars. In contrast the madVR screenshot doesn't show any such bars.

This test pattern works very well to test whether the processing queue beginning with upscaling and ending with final output somewhere somewhen ends up in rounded or truncated 8bit. If it does, you will see those faint vertical bars. The only way to produce a really smooth output with this test pattern is to do scaling and all the processing steps afterwards with more than 8bit. Also the final result must not be rounded or truncated down to 8bit. Instead only proper dithering preserves the smoothness.
Bruce
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Bruce
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post #14 of 16
Woah, that post went way over my head.

But I guess that makes sense - when you're not dealing with sRGB content, then you'll hit some point where you have quantization errors since things like YCbCr doesn't convert cleanly into sRGB.
post #15 of 16
Quote:
Originally Posted by brucethemoose View Post

That's not necessarily true. While applying other video filters, 10 bit processing is beneficial on 8 bit content.

http://forum.doom9.org/showthread.php?t=146228

You're talking about 10 bit vs 8 bit video, not 8 bit vs 10 bit monitors. Anyhow, no, you should not get a 10 bit monitor. Not for consumer purposes. Your graphics card likely won't output 10 bit and what you end up is with a highly oversaturated picture on almost everything you will commonly use. If you like how that looks, that's great. It's just not natural.

A Dell U2711 I had for a bit was 10 bit, and I can tell you right now that everything looked rather "warm" on it. You'd have to use SRGB mode, which defeats the purpose of buying a 10 bit monitor. So no, don't do it.
post #16 of 16
I have to say that PLS is slightly better than IPS. I have noticed that PLS monitors have higher contrast ratios and deeper black levels than IPS monitors.

The image quality on my QNIX QX2710 Evolution II is ever so slightly better than my CrossOver 27Q LED. The QNIX QX2710 is also overclockable.
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