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Hello. Sorry to bother you. I have a Windows notebook PC. I discovered that the black point is set to XYZ 0,0,0 which is the same as RGB 0,0,0. I would like to be able to set the black point to be more white, for example RGB 30,30,30. I want all other default settings in the ICM file to remain the same. How can I do that? Thanks in advance.
Quick Answer. I do not think you can to 30,30,30 . You can set black level to .1 and if your set is black level .05 black will be raised .05 . How much lumans is rgb 30,30,30 ? RGB is by definition 0 to 255 .
Side tip. I noticed with refresh display type it calibrated black in hardware but it was the 10% white point controls which worked better than the offset controls. Some sets might use 5% but I think it is 10% since 5% is to low to read 100% accurate and hard to adjust in lut. . The gain controls is for the white point 255,255,255.
Hello. Sorry to bother you. I have a Windows notebook PC. I discovered that the black point is set to XYZ 0,0,0 which is the same as RGB 0,0,0. I would like to be able to set the black point to be more white, for example RGB 30,30,30. I want all other default settings in the ICM file to remain the same. How can I do that? Thanks in advance.
Don’t use black point compensation in profile tab (activate advanced setting sif it does not show). ICM profile will store actual black level measured form your screen.
This means that CMM that are not able to do blakc point compensation will crush out of gamut dark colors: macOS desktop, maybe Firefox…
Thank you for your answers. Please allow me to clarify my original post. I do not have any calibration instruments. I want to use the Create Synthetic ICC Profile option in DisplayCAL. Then I want to make the synthetic profile the default Windows color profile.
I tried to create the synthetic profile, but its installation in Windows Color Manager did not change anything, regardless of the settings. What am I doing wrong? For the black point I used 1.23,1.30,1.41 and 3,3,3. Thank you.
Windows has no color mangement in desktop. Using any profile without VCGT won’t change desktop apperance.
Color managed apps can request desfukt display profile to OS.
Adobe suite has BPC, so any non zero black will be compensated to avoid crush. Apps with no BPC will crush OoG colors near black.Dear Vincent, Windows 11 has Color Management App in Control Panel. I can select various color profiles from the PC manufacturer and the appearance changes. As I assume, the black point is universal to Windows. So everywhere that there is black color, 0,0,0, it will become 30,30,30, in Desktop, in Explorer, in every app, everywhere. Everything else I want to stay the same. Just make black a little bit less dark. Is there no way to do this?
Raise the black level in hardware or software graphic card control. Are you worried about the full RGB vs Limited RGB? 16-235 vs 0 to 255? Both will work in color managed apps. Got to set it up though.
Dear Vincent, Windows 11 has Color Management App in Control Panel. I can select various color profiles from the PC manufacturer and the appearance changes.
New W11 24H2 auto color management seems disfunctional at best.
It looks that it relies on EDID data, so if I have a widegamut display with AdobeRGB green and P3 red, but I’m using an OSD preset/HW cal slot that simulates sRGB and I enable auto color management with my custom “sRGB-like” ICM as SDR profile… it desaturates further than required.
So “actual display profile” is EDID native gamut data and “SDR profile” chosen by user is simulated gamut. Just tested it.As I assume, the black point is universal to Windows. So everywhere that there is black color, 0,0,0, it will become 30,30,30, in Desktop, in Explorer, in every app, everywhere. Everything else I want to stay the same. Just make black a little bit less dark. Is there no way to do this?
Color management does not work that way. If you set as blackpoint RGB 0 0 0 -> L* to some random value in ICC/ICM file, color management will clip OoG greys unless CMM has some blackpoint compensation.
It seems that you want a calibration that modifies blck pt for an specific display (internal, VCGT, device driver). Once you get that, remember that color managed apps will behave depending on default display ICC profille info
Not sure if the extremely disfunctional W11 24H2 auto color management will allow to use a custom profile as simulated profile with custom blck point. If you have done this and this “auto color management” does not reflect it… then it’s just another anomaly in this new feature.
So everywhere that there is black color, 0,0,0, it will become 30,30,30, in Desktop, in Explorer, in every app, everywhere.
A synthetic VCGT can do this, see the attached example. Do you actually like the results though?
Can you please explain how you did that?
Also can you tell how white and black point can be applied to already existing ICC\ICM profile? What tools, what exactly to edit in profiles? How it can be done by DisplayCAL or Angyll ?
What i want to do is create ICC which is exactly same as my existing calibrations, but instead of using FULL color range as is, it actually expands color range from LIMITED to FULL. I need this for games because 99% of console ported games calibrated for limited color range and on PC most of devs never bother to fix it and they port it as is so intended black point in games appears to be 16 16 16 and intended white point appears to be 235 235 235. I used to fight it via reshade and made extended levels shader (that comes with legacy shader package of Reshade) but its not always works.
I also used my LG tv settings and just set Limited color range for input while PC was set upt to full color range for output, which made automatic Limited to full expansion and fixed colors, but now im away from my tv and using laptop and deck without display settings that allows to set limited range, so the only way i can fix it globaly now is to make ICC\ICM that does linear transformation of color range and maps input 16 to output 0 and input 235 to output 255.
What video driver on the laptop? Some have 2 video cards a gameing one and a desktop one. It could be a driver problem. RGB full would be the correct output for the laptop screen. A game that only goes to 235 white would be very unique. What game? Did you try powertoys and use the colorpicker to see the RGB parts of the game? How does a white ramp test at http://www.lagom.nl/lcd-test/gradient.php look? Does the white clip ?
Mapping 16-235 to 0-255 is straightforward with a VCGT that looks like the attached image.
What is more difficult is adding the mapping if you already have an ICC profile that corrects the display in question and you want to merge them.
How it’s done? A bit of math to compute the curve, then encoding it in VCGT and using a library like lcms to write it to a ICC profile. Requires a bit of programming. If anyone knows a simpler way to achieve it, please mention.
