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post #1 of 13 Old 11-23-2019, 06:55 PM - Thread Starter
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Calman Not Applying ICC Profile?

I am just recovering from a blue screen which ended up needing me to format my hard drive & reinstall windows.

As a result I need to recalibrate my monitors but am having issues with the colour gamut not being corrected.

The monitor is an Acer Predator X34 & have used Client 3 before with great success but not matter what I try I cannot get the colour gamut to be corrected.

The grayscale is brought into line great which is confusing me as to why the colour is not.

I have tried reinstalling my video card drivers & I downgraded to Calman version 5.10.0.50 but it made no difference.

I know that with a good profile this monitor calibrates very well so the results I am getting are not normal.

Any ideas?

I have attached a screen grab of the pre & post calibration results & it is clear to see that the colour checker results are the same & no correction has been applied.
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post #2 of 13 Old 11-23-2019, 08:01 PM
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Quote:
Originally Posted by AdamAttewell View Post
I am just recovering from a blue screen which ended up needing me to format my hard drive & reinstall windows.

As a result I need to recalibrate my monitors but am having issues with the colour gamut not being corrected.

The monitor is an Acer Predator X34 & have used Client 3 before with great success but not matter what I try I cannot get the colour gamut to be corrected.

The grayscale is brought into line great which is confusing me as to why the colour is not.

I have tried reinstalling my video card drivers & I downgraded to Calman version 5.10.0.50 but it made no difference.

I know that with a good profile this monitor calibrates very well so the results I am getting are not normal.

Any ideas?

I have attached a screen grab of the pre & post calibration results & it is clear to see that the colour checker results are the same & no correction has been applied.


We are getting ready to release a update to the windows version with a bunch of bug fixes for icc changes in windows 10. Let me find out more on the expected release date.
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post #3 of 13 Old 11-24-2019, 03:42 AM
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Remember that Windows has no OS wide Gamut correction capability via ICC profiles.
Just 1D Grey Scale via the graphics card VCGT.

You must use an ICC aware graphics program for gamut to be managed.

https://www.lightillusion.com/icc_profiles.html

If the displays can 'load' the ICC, and use an internal 3x3 matrix, you can have display based gamut correction (within the limits of the abilities - which are poor - of the 3x3 matrix).
Combined with the VCGT 1D LUT, you then have limited display colour management.

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post #4 of 13 Old 11-24-2019, 10:23 AM
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Quote:
Originally Posted by Light Illusion View Post
You must use an ICC aware graphics program for gamut to be managed.

https://www.lightillusion.com/icc_profiles.html
A very informative article, although I don’t think it answered Adam’s question; i.e., why is CalMAN itself not showing the results of the calibration. (Actually the ColorChecker dE is improved, but the CIE diagram shows no changes. It’s unlikely that only the Y component has been corrected).

One thing the article does not seem to address is the handling of out-to-gamut colours. It only criticizes ICC’s approach of using Rendering Intents, but does not say how 3DLUTs address the issue.

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post #5 of 13 Old 11-24-2019, 10:55 AM - Thread Starter
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Thanks for all the replies guys but I am a little confused.

Is this an issue with Calman or me not understanding correctly?

Like I said in my original post the graphs after calibration looked remarkably better than they do now & I am doing exactly the same as I did before.

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post #6 of 13 Old 11-25-2019, 03:07 PM - Thread Starter
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@WiFi-Spy


Any news on when the update with the bug fixes will be released?


Working on my monitors not calibrated is driving me crazy
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post #7 of 13 Old 11-25-2019, 06:54 PM
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Quote:
Originally Posted by Dominic Chan View Post
A very informative article, although I don’t think it answered Adam’s question; i.e., why is CalMAN itself not showing the results of the calibration. (Actually the ColorChecker dE is improved, but the CIE diagram shows no changes. It’s unlikely that only the Y component has been corrected).
Take anything that lightspace says about ICC profiles with a giant grain of salt (They don't seem to really understand how they work.)
Quote:
One thing the article does not seem to address is the handling of out-to-gamut colours. It only criticizes ICC’s approach of using Rendering Intents, but does not say how 3DLUTs address the issue.
ICC profiles make use of multi-dimensional interpolation tables AKA "3D Luts". An ICC device link is a super-set of a "3D Lut", it's just in an actual industry standard file format, rather than some random manufacture specific format.
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post #8 of 13 Old 11-25-2019, 07:03 PM
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Quote:
Originally Posted by gwgill View Post
ICC profiles make use of multi-dimensional interpolation tables AKA "3D Luts". An ICC device link is a super-set of a "3D Lut", it's just in an actual industry standard file format, rather than some random manufacture specific format.
That makes sense, as DisplayCAL can convert an icc profile to a 3D Lut very quickly, like a file format change.

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post #9 of 13 Old 11-26-2019, 12:59 AM
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Unfortunately, there is nothing incorrect in the inked or stated ICC info.
ICCs have many issues, and is why we (the film and TV industry) avoid them for any colour critical applications.
They are just not at all reliable enough, as defined.

As said, Windows doesn't apply ICCs at all at the OS level - it just used the VCGT, which is a 1D LUT (and not actually part of the ICC specification). and so only affects grey scale.

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post #10 of 13 Old 12-03-2019, 06:26 AM - Thread Starter
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@WiFi-Spy still no update on when the bug fixes will be released?
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post #11 of 13 Old 12-03-2019, 09:58 AM
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Originally Posted by AdamAttewell View Post
@WiFi-Spy still no update on when the bug fixes will be released?


We are wrapping up the last testing. Did you sign up for the beta program?

Tyler

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post #12 of 13 Old 12-03-2019, 12:40 PM - Thread Starter
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We are wrapping up the last testing. Did you sign up for the beta program?

Tyler

No I did not unfortunately. Great news on the testing, I look forward to the release.
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post #13 of 13 Old 12-03-2019, 12:42 PM
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No I did not unfortunately. Great news on the testing, I look forward to the release.


Please sign up for the beta program here:


http://www.portrait.com/calman-beta-testing-program/

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