[argyllcms] Re: Dell U2711 - is it any good?

  • From: edmund ronald <edmundronald@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Thu, 23 Jun 2011 16:01:20 +0200

The display is determined by the interaction between the backlight and the
color filters in front of the LCD elements. Once these are determined,
software changes in driving teh device should have no effect.

Edmund

On Thu, Jun 23, 2011 at 2:43 PM, János, Tóth F. <janos666@xxxxxxxxxx> wrote:

> 2011/6/22 Graeme Gill <graeme@xxxxxxxxxxxxx>
>
>>
>> With the scheme above, all you need is for someone with a spectrometer
>> to measure the display, and then everyone else with any colorimeter
>> that uses this scheme can use the measurement to create a n accurate
>> correction matrix for their particular colorimeter. That reduces the
>> scope of the problem considerably.
>>
>>
> I have a concern about this method.
>
> So I have the spectral characteristics on my instrument. This is unique and
> could be assumed as nearly constant in time. I can measure the spectral
> characteristics of the given display and compare it with the curves from the
> firmware. This sounds good.
>
> But what if I start to tune the gamut emulation with the internal processor
> of the display hardware? The primaries will virtually change every time I
> change the hardware settings.
> Could it cause any problems?
>
> For example, I start to calibrate the gamut controls on a display with a
> colorimeter using the correction matrix. Does the correction matrix becomes
> invalid as soon as I adjusted any gamut controls? (So I can't achieve the
> target primaries at all...)
>

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