[argyllcms] Re: Bad measurements & white point calibration with Argyll 0.7b7 and GretagMacbeth i1Display 2
- From: "Hal V. Engel" <hvengel@xxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 9 Jan 2008 18:46:47 -0800
On Wednesday 09 January 2008 17:36:38 Graeme Gill wrote:
> Craig Ringer wrote:
> > I've seen the same issues with lprof, which uses a slightly older
> > version of the Argyll meter reading code.
>
> I'm struggling to understand this, as I understood that
> lprof doesn't have a calibration capability ?
>
> Graeme Gill.
LProf does do calibration and now includes a modified version of LCMS that has
the ability to add a VCGT to a profile. LProf uses a different algorithm
from ArgyllCMS to give users feed back when adjusting the white/black points
but my testing indicates that it gives almost exactly the same results as
dispcal. The same meter on the same display with the adjustments untouched
will typically read +-50K which is comparable to what I see when running
either of these from run to run.
Also a correction LProf is using current ArgyllCMS meter code (beta7).
Hal
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