Hi, I took a look of your 3D LUT file, generated from CalMAN.
Since CalMAN don't have any tool to examine any 3D LUT data file, the only way of verification is measurements of grayscale/saturation/colorchecker etc.. measurement or checking visually some color reproduction patterns or real content.
For that reason I used LightSpace where it has 3 tools to examine 3D LUT files. (for not entering to more details about these tools, you can see about 3D LUT Viewer
, LUT Preview
and 1D LUT Viewer details to older posts)
The data are not looking good, the cube shape has many problems to various areas, its completely useless LUT generation, while the same time the 1D LUT viewer looking good (except the usual unnecessary luminance drop (top right), explained again there
), I mean there no issues in low end (bottom left), means that you didn't had such meter errors in low end. (see 1D LUT picture there
, because has large size for posting it here)
Generally CalMAN can produce better results when you are using less points, as user feedback has shown over the years if you are watching this thread... It's better to use up to 3500 or less (not sure if it will measure 3500 different, but if you enable full logging and open the data files and check you will see if its measured 2-3 times the same patch).
Its not normal with less points to produce better results but its the up to capabilities of the software.
The problems you experience are easily noticed when I used LUT Preview, it will be the same issues as you see to your projector (the following files are animated APNG files, they will swap your LUT ON/OFF per 1 sec....if you don't see animation try other browser which support APNG files):
Try again using a picture or gamut mode which will provide larger gamut coverage before starting the measurements (use Saturation sweeps to find out) and increase delay before each meter read.
All parametric adjustments of a display should be ignored (any CMS, and parametric Grayscale etc.) , calibration controls should be used as minimum as possible.
For preparation (pre-calibration steps) for 3D LUT display characterization, you need to select the most accurate colortemp mode (less RGB balance errors), select a gamma preset that is close to your target gamma (you can use Grayscale, measurements to find out/compare how each preset performs), select your native display gamut setting (you can use Saturation sweep measurements to see which is the largest gamut setting), do contrast/brightness using some patterns and then pre-cal only your 100% White RGB balance with RGB-Gains controls while you will adjust to your target Luminance using your lens aperture (if you have that control, or contrast if you don't have lens adjustments.)