Lumetri 'Auto Color Adjustment' without control

Report · Nov 29, 2023

Over the last year or so, I have experienced a bug with the Lumetri Color Panel.

When using the Lumetri Color 'Basic Correction' function, if I move the sliders for any of the following: Exposure, Contrast, Highlights, Shadows, Whites or Blacks, most (not all) the time, it will suddenly jump around and apply a 'Auto Color Adjustment' which can be confirmed by looking at the History panel. I then have to undo this, to try again and move the slider without it applying this. No matter the device, the project, the version, I experience this issue. I have completely restarted my preferences, and even got a new computer throughout this process and the same issue persists. It is incredibly time consuming and frustrating. It would be nice for this bug to finally be sorted out.

I've never found anyone else with this issue, but hopefully I'm not alone.

Version: 24.0.3 but has happened on all versions since mid 2022

Platform: Mac Studio 2022, Apple M1 Max, 64GB, Sonoma 14.1.1 (but has also occured on Mac Mini 2021 and previous OS versions).

Report · Nov 29, 2023

That is bizarre ... I've never seen that behavior!

@Kevin-Monahan ... any ideas?

Report · Nov 29, 2023

Yes, very strange!

Report · Nov 30, 2023

Hi @Adelaid5E57

This is an incredibly strange issue and has not been faced by us at all.

Could you share some more details that might help us narrow down the scneario in which it may be reproducible?

Is it MAC only or occurs on windows as well (if you may have any win machine).

Does it happen with any specific type of media or all formats?

Can you try applying Lumetri from ECP and does the same happen still?

Report · Dec 06, 2023

Hi @Mohan Sharma

Apologies for the delay, I didn't have a chance to sit at my computer and test it properly until today.

I only have a MAC, and have not tested or really have the ability to test on a windows machine. For good note, this does not happen on my Macbook Pro 2021, but has happened both on my Mac Mini 2021 and my Mac Studio 2022.

I had a play around and for the moment it seems to only happen with FX6 footage, which is important to note as only just recently have Adobe Premiere Pro introduced the 'Auto Tone Map Media', so I no longer have to manually change the colour space of the Rec .709 footage (as it used to import with a pre-made LUT/HDR issue). I am grading flat, rec. 709 footage with a LUT designed for this. The format is .MXF.

I've had a play around with the ECP and it doesn't seem to occur on there, only within the Lumetri Color Basic Correction Panel. I have noticed it is happening more often when I've either copied the attributions from another clip, or used a preset I have saved. Applying the LUT directly and modifying the color doesn't seem to produce this issue.

Thoughts?!

Report · Dec 06, 2023

Thanks @Adelaid5E57

We are looking at this with the information you have shared above and would get back to you.

Report · Dec 07, 2023

As another user, that's a great post with solid useful information. Specifics detailed, which is something "we" troubleshooter types normally seem to have to pull out the pliers to get!

Thanks ...

Report · Dec 07, 2023

Hi @Adelaid5E57

Would it be possible for you to share the preset file you are using to repro this issue? That might be helpful to understand the repro steps.

Report · Dec 07, 2023

Hi @Mohan Sharma here's the preset available to download: https://drive.google.com/file/d/1Xq5ivs5Qglv4UF_FvkqMLW2wwHZQeGYt/view?usp=share_link