Limitations in the Lumetri Color Panel

Limitations in Lumetri
This video tutorial is about some limitations and illogical behaviors in the Lumetri Color Panel that you need to be aware of to use it correctly and get the best image quality. I think the Lumetri Color Panel is a great idea, but it still has two areas where it does a really, really bad job: Overbrights and Secondaries.

The Lumetri Color Panel handles overbrights wrongly

The Lumetri Color Panel handles overbrights wrongly

Vanishing overbrights

Surprisingly, when you drag down the Whites slider, the overbrights stay above 100%! This is really bad for formats that actually store overbrights. Furthermore, this is not how other software, like Adobe Camera RAW and others, work. So most people destroy their images with the Lumetri Color Panel without knowing it!

Because it’s the default setting, people clamp the scopes signal at 100 % and show 8-bit color resolution. So they never see their overbrights and think there is no more detail to be found in the clouds and other overbrights, and that their footage cannot be saved.

 

Footage corrected with Lumetri Color Panel.

Footage corrected with Lumetri Color Panel. Note the blown-out clouds.

Footage corrected using RGB Curves and Three-Way Color Corrector

Footage corrected with RGB Curves and Three-Way Color Correction. Note the increased detail in the clouds.

Strange Secondaries

Then there’s the Secondary Color Correction, which looks at pixels after all other adjustments, instead of looking at the original pixels in the footage. That makes further tweaking very cumbersome.

These two limitations are the reason that I still don’t use the Lumetri Color Panel, even though I’d love to. I get much better results, faster, with the so-called “obsolete” RGB Curves and Three-Way Color Corrector effects.

Let’s hope the Premiere Pro team can fix these problems before the next release, and make the Lumetri Color Panel work as good as the old effects – or better.

Video tutorial

 

You may also like...

16 Responses

  1. Peter H says:

    Star Man.

  2. Jon says:

    Hey thanks for that. Was wondering if you have updated the Lumetri ColorPanel section in your book. I bought the book a couple of months ago. and its great, but there is nothing on that section that I see. Thanks Jon

    • The book was written for the CC 2014.2 version, and there was no Lumetri Color Panel at the time. I am in the process of updating the book. See http://premierepro.net/coolstuff/#faq for details. Because of the limitations shown in this tutorial, I don’t recommend using the Lumetri Color Panel (yet) anyway. If they do get it to work properly, I’ll start using it.

  3. June Verelst says:

    if you use the curves and color wheels first to make the basic grade you will not get this behaviour.

    • Sorry June, but that’s not true. Try this: Use the Curves and wheels to do your basic grade – then drag your Whites slider. Now what used to be overbrights will stay close to between 90 and 100, while the rest of the signal is going down. You end up with a gap around 90% instead of at 100. Not exactly great.

  4. Mike Curtis says:

    Other issues – I’ve discovered that when working with HDR material, Lumetri renders differently between After Effects and Premiere. Premiere doesn’t color manage, After Effects can. After careful tests to verify that rendering EXR sequences unchanged through After Effects didn’t alter their color as compared to the original EXR sequences. But using the same settings in After Effects as I did in Premiere, the rendered output, when compared to the Premiere version, had crushed blacks and darker shadows, but left the highlights the same. Sort of a reverse Gain setting.

  5. John Bills says:

    Thanks, Jarle. This’ll save my C-Log 2 footage. I was unhappy with the color and couldn’t figure out why. Also, I enjoyed your courses at Adobe MAX this year. Thanks for coming and teaching.

  6. Arthur Ditner says:

    Thanks for this breakdown!

    I also find the gain slider to be insufficient in the 3-way colour tab within Lumetri, I find myself boosting it and sliders in the basic correction tab.

    Also of note – simply loading a LUT in Lumetri as of CC 2015.3 is a complete resource hog vs CC 2014.

  7. SDWLK says:

    Hey!
    Can we get this video you used, in raw to experiment? It will be nice, maybe i can found a solution

  8. Bryce says:

    This is interesting. I’ve never had this problem. I shoot in avchd. Have you tried turning clamp off?

    • Didn’t you watch the video? Yes, I’ve turned clamping off, otherwise I wouldn’t know there were overbrights. But you know that clamping is a setting only for the scope, right? It doesn’t affect the image at all.

  9. Bas Timmermans says:

    Tnx for the info Jarle.
    Now I have to see what to do with all my LUTS if I stop using Lumetri?
    Did some tests could get the same results with RGB curves and three way color corrector 🙂
    Probably will save them as presets?

Leave a Reply

Your email address will not be published. Required fields are marked *