Studio Display brightness control issues

[Lee Cooper]

I noticed it is possible to control display Brightness only when using the default Apple Display (600 nits) color gamut profile/preset.
When using any other presets, for instance P3-DCI, P3-D65, the brightness control is grayed out. In the P3-DCI the display is very dark, barely visible what is on screen.
On my knowledge Brightness is not a part of the Color Gamut and it should be adjustable.

-default P3-600 nits:

-other presets: NO Brightness control:

Do you have same issue?

 

[Absrnd]

The presets are made this way, you can adjust it yourself, just copy the setting and adjust as you want.

This might explain it.

 

[Maryarena]

The presets are made this way, you can adjust it yourself, just copy the setting and adjust as you want.

This might explain it.

You don't know how much I appreciate this video! I have been through two Apple Chats, two Apple Advisor phone calls, trying to fix that I could not adjust brightness! They don't know anything! They have made me even Restore my brand new Apple Studio! I was supposed to call tomorrow, if Restoring did not resolve my problem. I am in SHOCK! I am going to watch this video again! THANK YOU SO MUCH!!!

Now to also learn how to calibrate!

Gloria