[argyllcms] Re: FWA overcompensation bug in spec2cie

  • From: Alexey Gribunin <Gribunin@xxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Thu, 15 Jul 2010 16:11:12 +0400

Hello Graeme!

But I need it compensated only once, in one step like this:
spec2cie.exe -i ref/D50_0.0.sp -f -o 1931_2 Test.ti3 Test_UVCut.ti3

It is only being modelled once with this command.

Yes, I know. I'm trying to do it to get Lab values from UV-cut simulated spectrals, but with standard D50 illuminant used for tri-stimulus calculations. The other way is to extract spectrals from Test_UVCut.ti3 and to convert it to Lab in XRite MeasureTool, for example.

But I thought that Lab values in Test_UVCut.ti3 should be calculated with the standard D50 illuminant, that's why I decided that it's a bug. If it's not a bug then it's necessary to mention in manual. Because as I know I'm not alone who found this behavior little bit strange.

Best regards,
Alexey Gribunin,
UNIT Color Technologies,
Moscow, Russia.

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