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My monitor is samsung Odssey G7 which is quantum dot + Mini led combination
I think the combination selection should be mode:LCD correction:LCD Quantum dot led(samsung QLED Q9)
However
① When I select LCD Quantum dot led(samsung QLED Q9) for correction, why the mode is forced to refresh?
② If I choose to search online calibration file, why the mode is LCD again? I am looking for the same Oddssey G7 monitor.
Which is the right combination?
Thanks1 Bc ccxxmake is setting on CCSS text file REFRESH YES by mistake when creating the CCSS. It is text, you can edit them.
2 Mode has no use for i1d3 (maybe selecting refresh on actual refresh display may improve low light readings). “Mode” is used to select bundled matrix correction from factory on Spyders (WLED, CCFL, WIDE GAMUT LED…).
i1d3 have no factory set of matrices. They store spectral sensivities of device filters in firmware, mixing those data and a spectral power distribution sample (CCSS) a custom “unique” 3×3 matrix is computed on the fly on device initialization.Calibrite Display Pro HL on Amazon
Disclosure: As an Amazon Associate I earn from qualifying purchases.Thank you very much for your answer!
1. thanks to you, I learned another trick
2. My understanding is that for Spyders brand colorimeters, they have calculated and built-in 3*3 matrices for various display technologies in advance based on the spectra of the different display technologies, and then you can select the corresponding (WLED, CCFL, Wide Color Gamut LED ……) in the measurement mode, which is equivalent to the CCMX calibration method The correction method is equivalent to the CCMX correction method. After the selection, correction can not select the corresponding spectral samples, here the default becomes “none”, right?
3. CCSS uses spectral samples of different display technologies to match my colorimeter.
①Calculate the RGB value by integrating the SPD (4th curve) of the CCSS spectral sample with the built-in RGB response value of the colorimeter.
② Calculate the standard XYZ values by integrating the SPD (fourth curve) of the CCSS spectral samples with the CIE 1931 standard colorimetric function.
③Calculate the 3*3 conversion matrix from the results of ① & ②.
But I have a question, there are 4 curves in CCSS: R/G/B power distribution curve + overall SPD curve, should we use SPD curve in both ① & ② calculation process? Or at which step will the R/G/B power distribution curve be used?
Thank you!Thank you very much for your answer!
1. thanks to you, I learned another trick
2. My understanding is that for Spyders brand colorimeters, they have calculated and built-in 3*3 matrices for various display technologies in advance based on the spectra of the different display technologies, and then you can select the corresponding (WLED, CCFL, Wide Color Gamut LED ……) in the measurement mode, which is equivalent to the CCMX calibration method The correction method is equivalent to the CCMX correction method. After the selection, correction can not select the corresponding spectral samples, here the default becomes “none”, right?Yes, SpyderX has no “portable” corrections, just a few ones from unknonw display models that may or not match your display SPD, specially with widegamut LEDs where there are several flavors of WLED PFS, QLED and such… all corrected by a single generic 3×3 matrix
3. CCSS uses spectral samples of different display technologies to match my colorimeter.
No, CCSS matches display. It has no information about colorimeter, that0s why the’re “portable” between i1d3 and we can share them as long as display SPD is the same or very close.
①Calculate the RGB value by integrating the SPD (4th curve) of the CCSS spectral sample with the built-in RGB response value of the colorimeter.
② Calculate the standard XYZ values by integrating the SPD (fourth curve) of the CCSS spectral samples with the CIE 1931 standard colorimetric function.
③Calculate the 3*3 conversion matrix from the results of ① & ②.
But I have a question, there are 4 curves in CCSS: R/G/B power distribution curve + overall SPD curve, should we use SPD curve in both ① & ② calculation process? Or at which step will the R/G/B power distribution curve be used?
Thank you!Accuracy in this case depends also on i1d3 firmware data, sensor filters may not match CIE observer … and ot is not critical as long as spectral sensivity curves of the sensor is stored properly and accurately on firmware.
ArgyllCMS / Xrite SDK on i1d3 startup make a “synthetic” measurement. CCSS SPD + std obs = XYZ, CCSS SPD + firmware observer = R’G’B’ for WRGB. Then a 3×3 RGB to XYZ is computed and used as correction.
“No correction” scenario uses i1d3 filter response as fake display SPD bc i1d3 does not output CIE XYZ coordinates but raw RGB counter values.Regarding your question take a look on ArgyllCMS mode, i1d3.c, i1d3_comp_calmat(). I do not remember details but i’d say that RGB readings are the ones used, additional curves modify matrix by a minimum mean square error method.
Ask in ArgyllCMS the compute details about additional samples of the 3 basic R,G,BSpyderX Pro on Amazon
Disclosure: As an Amazon Associate I earn from qualifying purchases.
