[argyllcms] Re: Displaying sRGB graphics on wide gamut monitors - gamma problem?
- From: Gerhard Fuernkranz <nospam456@xxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 27 Oct 2010 18:33:39 +0200
Am 27.10.2010 17:50, schrieb Anders Torger:
> However, I need to study more how the data in these tables are actually used.
> The source of all this was that I expected vcgt values at 0,0,0 to be 0,0,0
> with the -k 0.0 parameter to dispcal ...
Well, do you stringently need that as long it is granted that the RGB
numbers > 0 sent to the monitor still display the same black color on
the screen?
If this is not granted, then I'd suspect a bug [where "same color" does
of course not mean exactly the same value, but within some measurement
tolerances and the numerical tolerances of the algorithm - I'd possibly
accept a difference of say 1...2 delta E as "same black color", also
depending on the reproducibility of colors on the display.
[ Calibration becomes very difficult though, if the monitor's response
is not monotonically increasing; for instance if RGB numbers > 0 sent to
the monitor result in darker output than RGB=0. But in this case more
than ever using RGB numbers > 0 for "black" would be justified, IMO. ]
Regards,
Gerhard
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