[argyllcms] Re: Awful result with Argyll 1.3.5 + dispcalGUI 0.8 + i1Display Pro & Dell U2711 :-(((
- From: Paolo Avezzano <info@xxxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sun, 15 Jan 2012 12:29:14 +0100
Please, keep posting settings so that they may help me find a good balance.
I tested Standard mode, as previously mentioned, but it didn't get any better.
The gamut is more or less the same. Native WP was near 7500K for Standard and
5900K for Warm. Both quite distant from D65.
I tried to play a bit with Brightness/Contrast Values to start with better
black/50%/white levels but again, no success.
I got those pink/magenta tones too. I'm not speking of hot greys, I'm really
speaking of pink display!
I'm not so sure that i1d3 devices are that supported, are they?
Regards,
Paolo
On 15/gen/2012, at 12:10, Gerhard Fuernkranz wrote:
> Am 15.01.2012 09:18, schrieb Paolo Avezzano:
>> How many gamma curves? Three or one? I'd say the former.
>
> Well, the choice depends on your objectives. When profiling a calibrated
> display, then personally I rather tend use only a single curve (or even a
> single gamma, after calibration to a gamma target response), because a matrix
> profile with three different curves will garble the neutral gray axis again,
> which was previously established by the calibration. The profile with the
> single curve may result in a larger self-fit delta E, though. But that's
> life. If the display isn't perfectly additive, then a matrix/TRC model can
> never fit the actual behavior of the display exactly, and one has to renounce
> accuracy in some regions of the color space, while other regions are modeled
> more accurate (like trying to approximate a curve by a straight line, as a
> figurative example). The choice of matrix and curves eventually determine,
> which regions of the color space do fit better, and which regions do fit
> worse. It is eventually a trade-off. A profile with a single curve basically
> preserves the neutral gray axis, as established by the calibration, at the
> cost of a worse average fit, and a profile with three individual curves
> usually fits better on average, at the cost of potentially garbling the
> neutral gray axis, which was established by the calibration.
>
> Regards,
> Gerhard
>
>
>
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