Photoshop doesn't display 16 bits color correctly

[Loomax]

Hello there.
I don't get it, it's like Photoshop 16bits stoped working. I used to work on 16bits files to have nice smooth gradings. But here's what happen now. Quitte the same as 8bits.
Anyone know how to fix it ? I'm on Mac.
Thank you !

[davescm]

Are you using a 10 bit/channel monitor and if so do you have 30 bits/channel checked in Preferences and set up in your GPU?

If not, then regardless of your document bit depth you will be displaying using an 8 bits/channel display system (and some displays are actually only 6 bit+dither) and will see banding on undithered gradients.

Dave

[Loomax]

Thank you for the answer.

I Have a 2020 iMac / 5700 XT.
The 30 bits channel ils checked but greyed out 😕 

[D Fosse]

https://community.adobe.com/t5/photoshop/30-bit-display-grayed-out-on-imac-2020-and-photoshop-22-3-0... 

[davescm · Accepted solution]

If your monitor and GPU support 30 bit then , you could have the same issue I had on Windows with 22.3 and for which I had to revert to 22.2

https://feedback.photoshop.com/conversations/photoshop/photoshop-223-30-bit-display-and-advanced-dra...

Dave

[Loomax]

I rolled back to 22.2 and it works. Waiting for new update.
Thank you guys for your help ! 🙂