MacOS ICC Black Crush

[Kacper Swiderski]

Hello!

I recently switched from Windows to Mac OS 15.2 and I’m trying to figure out calibration for my monitor (xiaomi mini-led) with displaycal updated for python3.  When I load ICC file there is a noticeable black crush in color managed applications, but if I load a 3d lut created with the same calibration on a supported app instead, everything is fine. Colors also match with each other except for near black values. When I calibrate it on windows there is no such problem. Do you know what I could be doing wrong? Is there a setting for macOS that Im missing?

• This topic was modified 1 year, 4 months ago by Kacper Swiderski.

[Vincent]

MacOS color management module is very limited: matrix, simple curve profiles with black point compensation. If your current profile stores other than fake infinite contrast (RGB 0 -> L* 0) macOS oversimplified CMM will process this as Out of Gamut, clipping darker values than display profile black point.
Adobe CMM has not this limitations.

But some users reproted a bug for mac or Adobe for mac. THere should be here in a thread, less than a months or two ago.

[Kacper Swiderski]

Oh okay, thank you for clarifying! Do you know if it is a viable option to manually edit such profile to get infinite contrast value or is it going to mess up contrast curve? If its not, do you know web browser and video player that doesn’t rely on apple’s color management? Or if there is an macos alrernative for Ledoge’s program for applying lut system-wide? Sorry for so many questions, After whole life on windows, mac os is a completely new beast for me 😅

• This reply was modified 1 year, 4 months ago by Kacper Swiderski.

[Vincent]

Easy way is to copy users\YOU\appdata\roaming\DisplaYCAL\storage\<find your profile> folder. Then reuse .cal (grey calibration) and profile with default settings for macOS (single curve+matrix+bpc)

Or redo full calibration.

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