[argyllcms] Re: Display Calibration. Setting up RGBCMY Hue/Saturation controls.
- From: János, Tóth F. <janos666@xxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sat, 19 Mar 2011 10:52:51 +0100
The hardware is good, and the firmware is also good (after the
dithering issue fix in the A01 version) but they are artificially
limited in features.
It would be a very nice hardware if we could re-write those internal LUTs.
But it's very usable in the factory calibrated sRGB and AdobeRGB modes
(for softwares without CMS) and Standard modes (with high quality
software CMS).
Did you try to use the Standard mode (as I suggested) yet?
(I recommand to do the subjective testing with PhotoShop or MPC-HC and
10-bit output if your VGA is capable...)
2011/3/19, Ivan Kadomin <ivan.kadomin@xxxxxxxxx>:
> János,
>
>
> It's too late to warn me. Yet another victim in the "watch out calibrating
> Dell U2410 in the Custom Colors mode" story :)))
> As I said initially I tried to understand how much colors my display is
> capable of, I tried to estimate it's native gamut. And that's why I was
> concerned about Custom Colors settings.
>
> My today's experiment confirms most of your statements.
>
> Using the Graeme's advices I was able to setup properly RGBCMY Hue. But oh
> my God what it lead to. Immediately before calibration I noted various kinds
> of color defects on the black to primaries gradients, clippings, tinting,
> etc. E.g. magenta looked real magenta when its saturation was 100, but at
> this value about a third part of black to magenta stepped gradient at the
> lights looked solid, and the middle steps were pink. Black to yellow and
> black to cyan gradients were green tinted in the middle. Black to RGB were
> fine, though I had to desaturate R and B to some extent. Despite all visible
> color defects I continued with calibration and profiling.
> Just if someone is interesting the color profile is in attachment. Native
> gamut is almost everywhere beats AdobeRGB. But of course calibration didn't
> fixed all color defects.
> Right vertical bar of this test image (
> http://www.realcolor.ru/assets/images/monitortest/RealColor.ru_MonitorTest_1920x1200.png)
> looked terribly. Also magenta clipping and tinting are not disappeared and
> also clippings/bandings on some kinds of smooth color gradients were
> visible.
>
>
> So, my conclusion is that Dell U2410's is physically capable of beautiful
> colors, where as its hardware and/or firmware are/is not. And it seems I
> will stick to Standard also. It's a pity, I liked bright saturated colors of
> the "Custom Colors" preset. :))
>
>
>
> Best regards,
> Ivan
>
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