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post #3451 of 3480 Old Yesterday, 10:24 AM
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Quote:
Originally Posted by petoulachi View Post
I'm still having problem with white after calibration (using a test video for white pattern, the 240-255 range blinks in a pink color ?!).
The 3D LUT will try to hue correct WTW if present I think, but it might be that one or several of the channels are already clipping at that point, which can lead to color casts in the WTW range like you've observed. The only way around that is to clip WTW entirely. Argyll 1.7 introduced an option for this, and in DCG it can be used by setting 3D LUT input encoding to "TV RGB 16-235 (clip WTW)".

Quote:
Originally Posted by petoulachi View Post
What am I supposed to do with whitepoint setting ? in fact I had stupidly take the screenshot values with x and y but I'm pretty sure I have to set my own value ?
If you've used the madVR preset, the whitepoint chromaticity coordinates will be set for D65 white, so there's no need to change those. If you've already adjusted the display you may want to uncheck "Interactive display adjustment" to skip that step.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
Current stable version 3.0

Last edited by fhoech; Yesterday at 10:27 AM.
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post #3452 of 3480 Old Yesterday, 01:01 PM
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Sorry about the repost from eecolor, thought perhaps I was in the wrong forum there to answer this noob question.
When I adjust the patch size to 10% for plasma calibration in madtpg and start calman calibration the patch on the extended screen......resizes immediately to 100%.
What am I doing wrong?

Help much appreciated, T.
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post #3453 of 3480 Old Today, 01:08 AM
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Quote:
Originally Posted by mightyhuhn View Post
after some googleing it looks like it is the same file as 3-white clipping from this source:
AVS HD 709 - Blu-ray & MP4 Calibration

If this is the case. what do you see with a disabled 3D LUT.

does 235 and below look normal with a active 3d LUT?

because 240+ looks pink i guess your screen is white clipping and the things you see there shouldn't be in any source. so everything is fine.
With no 3DLUT everything's fine, white as expected and so for the black.

Quote:
Originally Posted by fhoech View Post
The 3D LUT will try to hue correct WTW if present I think, but it might be that one or several of the channels are already clipping at that point, which can lead to color casts in the WTW range like you've observed. The only way around that is to clip WTW entirely. Argyll 1.7 introduced an option for this, and in DCG it can be used by setting 3D LUT input encoding to "TV RGB 16-235 (clip WTW)".

If you've used the madVR preset, the whitepoint chromaticity coordinates will be set for D65 white, so there's no need to change those. If you've already adjusted the display you may want to uncheck "Interactive display adjustment" to skip that step.
Here is a new result after calibration using DCG 3.0 & ArgyIICMS 1.7 :




Code:
 Size	400000 Bytes (390.62 KiB)
 Preferred CMM	0x6172676C 'argl' Argyll CMS
 ICC version	2.2
 Profile class	Display device profile
 Color model	RGB
 Profile connection space (PCS)	XYZ
 Created	2015-05-04 23:35:05
 Platform	Microsoft
 Is embedded	No
 Can be used independently	Yes
 Device	
     Manufacturer	0x00000000
     Model	0x00000000
     Attributes	Reflective
 	Glossy
 	Positive
 	Color
 Default rendering intent	Media-relative colorimetric
 PCS illuminant XYZ	96.42 100.00  82.49 (xy 0.3457 0.3585, CCT 5000K)
 Creator	0x6172676C 'argl' Argyll CMS
 Checksum	0x600BA984312D58BE09716E9F7D801B35
     Checksum OK	Yes
 Description (ASCII)	madVR 2015-05-04 0.3669x 0.3841y Rec. 1886 S XYZLUT
 Copyright	No copyright. Created with dispcalGUI 3.0.0.0 and
 	Argyll CMS 1.7.0
 Device model name (ASCII)	madVR
 Luminance	32.86 cd/m²
 Media white point	
     Is illuminant	Yes
     Illuminant-relative XYZ	95.34 100.00  63.36 (xy 0.3685 0.3865)
     Illuminant-relative CCT	4394K
         ΔE 2000 to daylight locus	6.97
         ΔE 2000 to blackbody locus	11.81
 Media black point	
     Illuminant-relative XYZ	0.0259 0.0244 0.0397 (xy 0.2881 0.2712)
     Illuminant-relative CCT	10180K
         ΔE 2000 to daylight locus	9.68
         ΔE 2000 to blackbody locus	7.88
 Colorants (PCS-relative)	
     Red XYZ	42.94  22.40   2.23 (xy 0.6355 0.3315)
     Green XYZ	31.43  65.99  11.13 (xy 0.2895 0.6079)
     Blue XYZ	10.71   4.10  57.82 (xy 0.1474 0.0565)
 Video card gamma table	
     Bitdepth	16
     Channels	3
     Number of entries per channel	256
     Channel 1 gamma at 50% input	1.53
     Channel 1 minimum	0.0000%
     Channel 1 maximum	71.33%
     Channel 1 unique values	183 @ 8 Bit
     Channel 1 is linear	No
     Channel 2 gamma at 50% input	1.71
     Channel 2 minimum	0.0000%
     Channel 2 maximum	62.60%
     Channel 2 unique values	161 @ 8 Bit
     Channel 2 is linear	No
     Channel 3 gamma at 50% input	1.98
     Channel 3 minimum	0.0000%
     Channel 3 maximum	51.04%
     Channel 3 unique values	131 @ 8 Bit
     Channel 3 is linear	No
 Device to PCS: Intent 0	
     Matrix	1.0000 0.0000 0.0000
         	0.0000 1.0000 0.0000
         	0.0000 0.0000 1.0000
     Input Table	
         Channels	3
         Number of entries per channel	2048
     Color Look Up Table	
         Grid Steps	33
         Entries	35937
     Output Table	
         Channels	3
         Number of entries per channel	2048
 PCS to device: Intent 0	
     Matrix	1.0000 0.0000 0.0000
         	0.0000 1.0000 0.0000
         	0.0000 0.0000 1.0000
     Input Table	
         Channels	3
         Number of entries per channel	512
     Color Look Up Table	
         Grid Steps	9
         Entries	729
     Output Table	
         Channels	3
         Number of entries per channel	512
 Red matrix column	
     Illuminant-relative XYZ	11.52   5.21  54.20 (xy 0.1625 0.0735)
     PCS-relative XYZ	14.31   6.06  71.41 (xy 0.1559 0.0660)
 Green matrix column	
     Illuminant-relative XYZ	44.49  22.64   1.01 (xy 0.6529 0.3323)
     PCS-relative XYZ	43.61  22.25   1.39 (xy 0.6485 0.3309)
 Blue matrix column	
     Illuminant-relative XYZ	39.34  72.14   8.16 (xy 0.3288 0.6029)
     PCS-relative XYZ	38.51  71.69   9.71 (xy 0.3212 0.5978)
 Red tone response curve	
     Number of entries	256
     Transfer function	sRGB
     Minimum Y	0.0000
     Maximum Y	100.00
 Green tone response curve	
     Number of entries	256
     Transfer function	sRGB
     Minimum Y	0.0000
     Maximum Y	100.00
 Blue tone response curve	
     Number of entries	256
     Transfer function	sRGB
     Minimum Y	0.0000
     Maximum Y	100.00
 Characterization target	[144963 Bytes]
 Characterization device values	[144963 Bytes]
 Characterization measurement values	[144963 Bytes]
 Absolute to media relative transform	Bradford
     Matrix	0.8951 0.2664 -0.1614
         	-0.7502 1.7135 0.0367
         	0.0389 -0.0685 1.0296
 Chromaticity (illuminant-relative)	
     Channel 1 (R) xy	0.6421 0.3339
     Channel 2 (G) xy	0.2977 0.6168
     Channel 3 (B) xy	0.1512 0.0610
 Metadata	
     CMF_binary	dispcalGUI
     CMF_version	3.0.0.0
     CMF_product	dispcalGUI
     License	Public Domain
     Quality	high
     OPENICC_automatic_generated	0
     DATA_source	calib
     MEASUREMENT_device	i1 displaypro, colormunki display
     prefix	CMF_
 	DATA_
 	MEASUREMENT_
 	OPENICC_
 	ACCURACY_
 	GAMUT_
     ACCURACY_dE76_avg	0.635204
     ACCURACY_dE76_max	2.077087
     ACCURACY_dE76_rms	0.705628
     GAMUT_volume	1.09468833133
     GAMUT_coverage(srgb)	0.9456
     GAMUT_coverage(adobe-rgb)	0.7474
I don't know if I still have the white/pink problem (not currently in front of my TV but on remote RDP), but the result are very differents but still strange aren't they ?
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post #3454 of 3480 Old Today, 03:32 AM
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Quote:
Originally Posted by petoulachi View Post
With no 3DLUT everything's fine, white as expected and so for the black.
what do you understand with white as expected?
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post #3455 of 3480 Old Today, 03:46 AM
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Quote:
Originally Posted by mightyhuhn View Post
what do you understand with white as expected?
White is white, also the correct range of white bands (234-230) are flashing grey as expected.

Last edited by petoulachi; Today at 03:49 AM.
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post #3456 of 3480 Old Today, 03:55 AM
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Quote:
Originally Posted by petoulachi View Post
White is white, also the correct range of white bands (234-230) are flashing grey as expected.
ok
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post #3457 of 3480 Old Today, 05:39 AM
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Quote:
Originally Posted by mightyhuhn View Post
ok
Isn't it what it should be ?
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post #3458 of 3480 Old Today, 05:58 AM
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Quote:
Originally Posted by petoulachi View Post
Isn't it what it should be ?
everything sounds right.
optimal only 234 and below flash. but your screen isn't white clipping at all.
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post #3459 of 3480 Old Today, 06:00 AM
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Quote:
Originally Posted by mightyhuhn View Post
everything sounds right.
optimal only 234 and below flash. but your screen isn't white clipping at all.
Ok. So for now, I have to find why using 3DLUT I have strange result. I guess it's the calibration process that I do wrong, but I can't figured why !
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post #3460 of 3480 Old Today, 06:22 AM
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Quote:
Originally Posted by fhoech View Post
The 3D LUT will try to hue correct WTW if present I think, but it might be that one or several of the channels are already clipping at that point, which can lead to color casts in the WTW range like you've observed. The only way around that is to clip WTW entirely. Argyll 1.7 introduced an option for this, and in DCG it can be used by setting 3D LUT input encoding to "TV RGB 16-235 (clip WTW)".
Maybe it's safer to make that the default and if a user wants to extend the hue correction into the WTW region they should choose the no clip option.
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post #3461 of 3480 Old Today, 06:52 AM
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Quote:
Originally Posted by petoulachi View Post

Code:
 Luminance    32.86 cd/m²
 Media white point    
     Is illuminant    Yes
     Illuminant-relative XYZ    95.34 100.00  63.36 (xy 0.3685 0.3865)
     Illuminant-relative CCT    4394K
         ΔE 2000 to daylight locus    6.97
         ΔE 2000 to blackbody locus    11.81
The calibration considerably limits the output luminance, and moves white to a rather peculiar location and CCT. Was there any reason to choose this whitepoint over D65? It's no wonder that WTW looks pink in comparison, the calibration most severely limits the blue channel. (I think I was partly mistaken, WTW through a 3D LUT crosses over from the whitepoint target to native white AFAIK, so it's not hue corrected all the way).
Generally I would recommend adjusting the display itself to hit the D65 x, y chromaticity coordinates, and use the backlight control to adjust to the desired luminance.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
Current stable version 3.0
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post #3462 of 3480 Old Today, 06:55 AM
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Quote:
Originally Posted by fhoech View Post
The calibration considerably limits the output luminance, and moves white to a rather peculiar location and CCT. Was there any reason to choose this whitepoint over D65? It's no wonder that WTW looks pink in comparison, the calibration most severely limits the blue channel. (I think I was partly mistaken, WTW through a 3D LUT crosses over from the whitepoint target to native white AFAIK, so it's not hue corrected all the way).
Generally I would recommend adjusting the display itself to hit the D65 x, y chromaticity coordinates, and use the backlight control to adjust to the desired luminance.
I'm really sorry but it's kind of chinese to me

What do you mean by "choose this whitepoint over D65" ?
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post #3463 of 3480 Old Today, 06:57 AM
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Quote:
Originally Posted by petoulachi View Post
I'm really sorry but it's kind of chinese to me

What do you mean by "choose this whitepoint over D65" ?
Well, the profile tells me it's roughly 4390K, so I'd assume this was the target chromaticity set during calibration. It's non-default though, thus my question.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
Current stable version 3.0
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post #3464 of 3480 Old Today, 07:20 AM
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Quote:
Originally Posted by fhoech View Post
Well, the profile tells me it's roughly 4390K, so I'd assume this was the target chromaticity set during calibration. It's non-default though, thus my question.
Where do I choose this settings ?
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Quote:
Originally Posted by petoulachi View Post
Where do I choose this settings ?
On the "Calibration" tab. Normally I'd recommend starting from the "3D LUT for madVR (D65, Rec709 / 1886)" preset (under "Settings") though, then this (and most else) will already be set correctly.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
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Originally Posted by fhoech View Post
On the "Calibration" tab. Normally I'd recommend starting from the "3D LUT for madVR (D65, Rec709 / 1886)" preset (under "Settings") though, then this (and most else) will already be set correctly.
So, I have to reset settings then, and use thoses :


Could I uncheck "interactive display adjustment", as I already know that my white/black are correct, and put the same chromaticity coordinates (0.3127x, 0.3290y) ?
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post #3467 of 3480 Old Today, 07:38 AM
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Quote:
Originally Posted by petoulachi View Post
So, I have to reset settings then, and use thoses :


Could I uncheck "interactive display adjustment", as I already know that my white/black are correct, and put the same chromaticity coordinates (0.3127x, 0.3290y) ?
When the display already is adjusted for D65, you can set whitepoint to "As measured". Disable interactive adjustment as well.

Edit: Actually on second thought, it's probably a good idea to leave both settings as-is - that way you can check if the display has drifted, and make sure you get the expected readings which are also influenced by the selected colorimeter correction.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
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Last edited by fhoech; Today at 07:54 AM.
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Ok, i'll try that tonight, just by setting up the tone curve as in the first page then !

thanks !
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post #3469 of 3480 Old Today, 07:55 AM
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Ok, i'll try that tonight, just by setting up the tone curve as in the first page then !
That's not necessarily needed, and I'd tentatively recommend against it because there's a slight chance it might actually adversely affect accuracy (although the effect is probably negligible). Also see my edit above.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
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Originally Posted by fhoech View Post
That's not necessarily needed, and I'd tentatively recommend against it because there's a slight chance it might actually adversely affect accuracy (although the effect is probably negligible). Also see my edit above.
Ok, I'll leave default settings for calibration then.

btw, I do not have set any colorimeter correction ? I thought it was not necessary for the i1 display Pro, maybe I'm wrong ?
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Quote:
Originally Posted by petoulachi View Post
btw, I do not have set any colorimeter correction ? I thought it was not necessary for the i1 display Pro, maybe I'm wrong ?
The i1D3's filters are probably good enough that it can be used without one, but I'd still recommend using an appropriate spectral correction if you know the type of backlight/panel of your display.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
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Quote:
Originally Posted by fhoech View Post
The i1D3's filters are probably good enough that it can be used without one, but I'd still recommend using an appropriate spectral correction if you know the type of backlight/panel of your display.
I don't (Panasonic P55ST60). Well, to be more precise, I don't know what is "backlight/panel" for a TV. Do you mean plasma ?
If so, where can I find a spectral correction ?
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Quote:
Originally Posted by petoulachi View Post
I don't (Panasonic P55ST60). Well, to be more precise, I don't know what is "backlight/panel" for a TV. Do you mean plasma ?
If so, where can I find a spectral correction ?
For a plasma there is no backlight as it's self-illuminating (for LCD, it might be something like "white LED" or "wide gamut CCFL"). In this case, the "Plasma" spectral correction would be appropriate. You can import the default (and high quality) X-Rite corrections in the "Tools" menu (select "i1 Profiler", in case it's not already selected the corrections have already been imported and should be under the "Corrections" dropdown on the "Display & instrument" tab).

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
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Quote:
Originally Posted by fhoech View Post
For a plasma there is no backlight as it's self-illuminating (for LCD, it might be something like "white LED" or "wide gamut CCFL"). In this case, the "Plasma" spectral correction would be appropriate. You can import the default (and high quality) X-Rite corrections in the "Tools" menu (select "i1 Profiler", in case it's not already selected the corrections have already been imported and should be under the "Corrections" dropdown on the "Display & instrument" tab).
Ok, just done that, and choose "Spectral: Plasma (EDR for Plasma created with primaries R, G, B and White)" for correction.

I'll do a new calibration tonight to see what's the result, hope this time it will be ok !

Thanks again !
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Dear Florian!
Low quality B2A tables= Low quality PCS-to-device tables in advanced gamut mapping options?
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Dear Florian!
Low quality B2A tables= Low quality PCS-to-device tables in advanced gamut mapping options?
Yes.
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Dear Florian!
Why in verification i can use Rec.1886 OR Custom gamma=2.4 Absolute, but in calibration i can use Rec.1886 AND gamma=2.4 Absolute?
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post #3478 of 3480 Old Today, 10:32 AM
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Dear Florian!
Why in verification i can use Rec.1886 OR Custom gamma=2.4 Absolute, but in calibration i can use Rec.1886 AND gamma=2.4 Absolute?
Not sure if I understand the question, but Rec. 1886 is defined by three parameters: Gamma exponent (2.4), how input is mapped to output ("Absolute" or technical gamma), and the amount of output offset (0%).
Note that on the "Verification" tab, you can only choose settings other than exponent if the profile blackpoint is not zero (because with a zero blackpoint, only exponent will affect the result). On the "Calibration" and "3D LUT" tabs (if not creating a 3D LUT from an existing profile), black point is not yet known so all controls are available, but may not make a difference depending on measured black point.
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Dear Florian!
What is single channel patches and multidimensional and centered patches in test chart editor?
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Quote:
Originally Posted by anta1974 View Post
Dear Florian!
What is single channel patches and multidimensional and centered patches in test chart editor?
Single channel steps are increasing intensities of red, green and blue, multidimenional steps is a grid ("cube"), and (body) centered multidimensional steps is a grid within a grid, e.g. if the number of steps is 5, then the result is a 4x4x4 cube centered within a 5x5x5 cube. To get a visual representation that you can zoom, rotate and pan, use the orange "3D" button (enable the checkbox next to "RGB", disable the one next to "Lab"), after creating a testchart.

DCG (dispcalGUI) - Graphical front-end for Argyll CMS display calibration and characterization
Current stable version 3.0
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