Originally Posted by Thormus
Thank you for the detailed response! I have received yours and Ryan's calibration discs. I was able to get white balance dialed in tightly with an average gamma of 2.38. I am confused on how to adjust colors. What am I aiming for? Do I do 75% or 100% saturation?
Hi, after the end of the grayscale, moving to color gamut calibration, you have to see what kind of patterns will provide you overall better performance.
Its something different per display, some displays provide low errors with 75% Saturation with 100% Stimulus, others with 100% Saturation.
You have to see what is the best compromise.
There many times where the saturation tracking is not perfect to points away from these you have used to adjust your color gamut, since you have 1 point per primary/secondary color (6 points to handle the whole gamut) its nearly impossible to have low dE everywhere.
The problem with limited internal display controls is that when you are moving away from the calibrated points and measuring other luminance or saturation levels, the errors are will be increased, so the more points (of different luminance/saturation levels) you measure the more errors you will locate. Classic charts or limited points been used usually don't show these issues.
Generally fixing only grayscale issues doesn't guarantee an accurate picture, you get only some good looking Grayscale charts with low dE, the real performance can still have a lot of errors because you are correcting only a few points, away from skin tones or memory colors correction, most of the movies are using mid-low saturation/luminance range colors if you analyze movies data's; most of the colors have mid-low levels, away from the edge of the gamut (100% Saturation / 100% Luminance); the colors which commonly calibrated using display internal calibration controls and default calibration software workflows.
With 3D LUT you will have to do only basic setup using your internal calibration controls, contrast/brightness/sharpness, find native gamut and pre-calibrate only 100% White using RGB-High/Gain controls, while you will look to set your peak output also.
I have posted some (old) results from 3D LUT correction using an LG OLED here
, and the Pioneer KURO there
Moving to 3D LUT, it will save you some thousand new hours of trying different patterns and different values of internal calibration controls to minimize your color errors and never can provide the best possible performance globally; because the adjusting points are only 6 (RGBCMY).
Here I have posted to another user the difference of calibration using internal controls vs. 3D LUT display characterization: Sony A1E 4K HDR OLED TV Thread (No Price Talk)
If you want to stay to internal display controls, there 4 different common type of patterns you can test to find out which ones are providing you better results.
You can perform 4 calibrations (Saturation/Stimulus Level):
...to find out which type of patterns will provide you lower dE overall, try to calibrate based to one of these options (for example 100SAT/75 STIM) and at the end, measure using 4-Point Saturation / 4-Point Luminance / ColorChecker / Fleshtones etc.
Later re-calibrate your display using another option (for example 75SAT/75 STIM) and remeasure at the end with Saturation/ColorChecker SG etc... and compare these 2 reports to see what patterns are providing you lower dE numbers.
I have posted more details there: http://01900888.com/forum/139-d...l#post56249070