M6400 E2E question: RGB seperation?

Hi,

I'm in the unusual position of having Dell send me 2 Covets (long story).

Anyway, one of them displays a strange visual abberation that I noticed pretty quickly. Some text looks like the red, green and blue colour have sperated, a bit like a poorly calibrated RGB projector. The effect is subtle but noticeable. It can be made more pronounced by sticking contrast and digital vibrance up. The other panel does not feature this.

Anyone seen this before? I swapped monitors and the problems remained - One machine has it, the other doesn't.

Any video/font settings I should be looking at?

Cheers!

Cheers!

 

No-one else see this? It goes away when I remove Dell's install of Vista business 64 and put on XP32, so it has to be OS related. Note sure whether it is the font, colour space, or video drivers......

 

I am not sure if I have that problem but when I adjust the monitor brightness through the hot keys, the letters on the UI that pops out looks like lens flare (probably not the best description). I could tell that it is not completely white, but a mix of red, green, and blue.

Other than that, I only have problems with blue being over saturated.

 

I haven't seen this issue yet with mine. I do see red, blue and green halos around the circular dell logo that is displayed on boot-up if I move my eyes from left to right when it's on screen. Try it next time you boot up.

 

Maybe I just didn't get you right, but to me it sounds like this could be caused by subpixel antialiasing on fonts, called "ClearType" in Windows. It uses the red, green and blue supbixels (that every pixel on your screen has to mix up colors) separately to make text easier to read. Cleartype can be toggled via the Control Panel, but I suggest you try out Microsoft's Online ClearType Tuner, as it has some additional, easy to use tuning options for cleartype, like "order of subpixels". If you have XP, you can also get a downloadable control panel plugin.

For additional information on ClearType and how it works, see http://www.microsoft.com/typography/cleartypeInfo.mspx

 

that's almost definately what it is...

try this for size http://www.lagom.nl/lcd-test/subpixel.php

 

That is just standard raindow effect Nix, like those seen on DLP projector

Thanks guys .This is definitely what I'm seeing. If you don't know the effect try running the cleartype tuner on XP.

My problem is that I turned off cleartype on Vista but it made NO difference globally. I can't run the cleartype tuner as it doesn't work with Vista. Currently I'm running on XP and all is fine, but is awful using Vista.I'm wondering whether the machine is set to BGR instead of RGB. Anyone know how to check?

Anyway, I'll look at this. Anyone wanting to see what I'm talking about should go to this page and turn up digital vibrance and contrast to 100%. The PCA dialog shown has horrible text., as does the cleartype text shown later on. That is how I see text usually on vista in the likes of notepad with digital vibrance at 0% and contrast at 50%.

 

hmm...odd because I can turn it on and off in vista 32 ult and see the difference between CT on and off.

 

Does it make a difference immediately? It doesn't on my system. On a web page, for example, I have to reload the page, on notepad I have to refocus the window, whereas on XP it seemed to be pretty much immediate. Anyway, it does change, but I can still see the effect when I use cleartype. Will stick to standard.

Incidentally, one final thing: Do you know the standard vista font, and how I can change it?

Cheers!

 

Visit the link provided by robf23, then scroll down on that page. There are comparison images which help you to determine this.