[argyllcms] Re: problems hitting white point (color temperature, RGB gain/contrast) while maintaining brightness: dE not stable

  • From: David Heinrich <dh003i@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Thu, 10 Dec 2009 19:10:22 -0500

On Thu, Dec 10, 2009 at 4:55 PM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:

> Gerhard Fuernkranz wrote:
>  I'm wondering whether this might be an interference between integration
>> time and vertical refresh rate? Graeme, does the Spyder driver actually
>> sync with the vertical refresh rate? Or does it just rely on a
>> (hopefully) long enough integration time?
> Hi Gerhard,
>        I was wondering if it was something like that too. The spyder 2
> is meant to be synchronized with the refresh, and it will normally
> do a white calibrate to achieve this. The Spyder 3 doesn't have such
> a capability. Turning on diagnostics may give some indication as
> to whether this is working reasonably.

I have run dispcal with diagnostics turned on and posted the results on
pastebin, as they are quite extensive.

I ran the following command from the argyll/spectro/ directory:
$ sudo ./dispcal -v10 -d2 -yc -D9 -P0.5,0.5,3.5 -o gdmf520-shaper-matrix

There result is posted here:

Other related posts: