The Official ChromaPure thread - Page 198 - AVS Forum
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post #5911 of 5913 Unread Today, 04:50 PM
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Issue with autocal resetting WB

Hi Tom,

Hoping you can help with this. So I've painstakingly calibrated the W/B and gamma on my Panasonic VT30, through a Radiance XS3D. When I come to autocal the 125 gamut, I select the top option to reset colour matrix calibration settings only and check just the Advanced Colour Gamut check box, however when I click the start button, the software resets the W/B and gamma too. I've done a number of re-installs following your post above, including a complete uninstall using 3rd party software that attacks it all the way to the registry. Each time however, I get the same result. I've included post manual calibration report and capture of the autocal figures. Am I doing something wrong?

Post manual calibration image attached.



Figures from after I click the start button for autocal below:

0% Grayscale xyY=(0.284,0.258,0.019)
Measuring 0% Grayscale
10% Grayscale xyY=(0.297,0.331,0.585)
Measuring 10% Grayscale
20% Grayscale xyY=(0.309,0.339,3.238)
Measuring 20% Grayscale
30% Grayscale xyY=(0.309,0.340,7.838)
Measuring 30% Grayscale
40% Grayscale xyY=(0.308,0.338,15.337)
Measuring 40% Grayscale
50% Grayscale xyY=(0.310,0.339,24.946)
Measuring 50% Grayscale
60% Grayscale xyY=(0.312,0.341,37.311)
Measuring 60% Grayscale
70% Grayscale xyY=(0.312,0.338,53.816)
Measuring 70% Grayscale
80% Grayscale xyY=(0.316,0.341,70.347)
Measuring 80% Grayscale
90% Grayscale xyY=(0.318,0.341,93.290)
Measuring 90% Grayscale
100% Grayscale xyY=(0.319,0.340,118.859)
Measuring 100% Grayscale
PreCalibration Measurement ...
Resetting Advanced Gamut to factory defaults
Starting auto-calibration 23:25

Thanks in advance,

Paul
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Last edited by youngsyp; Today at 04:55 PM.
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post #5912 of 5913 Unread Today, 05:23 PM
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Quite interested in your answer Paul.

A workaround occurred to me that I may implement as a backup and that is saving the tweaked WB/Gamma data in another (or multiple) CMS memories and copy it back after autocal if need be but like I said, I'm quite interested in the answer to your issue too.

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post #5913 of 5913 Unread Today, 06:20 PM
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Hi Geof,

Yes, I used save the current CMS to another CMS before a re-cal as a matter of course but stopped as I didn't feel I needed to anymore. Rather wish I had done so with this recent re-cal though. I've performed 3 WB and gamma re-cals from scratch over the last two evenings all to be obliterated by the reset feature not working as it states. The last one, I saved the WB and gamma settings to another CMS memory before I attempted an autocal of the colour gamut so I don't have to do that again.

Thinking about my issue a little further, I may not be Chromapure at fault. I noted that when I reset to default the colour gamut in the XS3D, it also resets the WB and therefore gamma settings. SO I wonder if Chromapure is sending the right command but, the XS3D is just blitzing all the CMS. I've only just updated to the latest firmware for the XS3D too...

I'll wait to hear from Tom though, as he may have insite.

Just to add to my post, I'm using Win 7 Home and a profiled i1 Display Pro.

Paul
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