Not yet. When my tech savvy brother comes over today to finish the process we will try that. I am trying to think of possible problems and solutions ahead of time to maximize his time here.

My desired calibrated gamut is rec 709. The LG C4 appears to have a wide gamut. When calibrating, should I set the gamut to auto (rec 709) or native (wide)? Previously, we set it to native in hopes that the LUT would adjust the gamut down to rec 709. Was that incorrect?

The chosen picture mode will stay in Wide gamut after the LUT is uploaded. To verify the LUT, select your target gamut in ColourSpace and run a patch sequence of your choice.

Have you contacted Ted to obtain the LG Guides?

https://displaycalibrations.com/lg_oled_guides_using_colourspace.html

Gotcha. That's good to know. Thanks.

I have not contacted him and it seems my password does not work to download it.

Question: Does the LUT apply universally to the whole TV no matter which source input? So will it apply on the home page the same as my HDMI output?

TV keeps forcing the gamut to "wide" even after I profiled in "auto detect". My tech savvy brother and my programmer friend could not figure this out. I'm giving up. Will probably pay for someone to calibrate it properly before I grade anything in the theater. I guess at least it's closely calibrated with just the TV settings.

Chroma Deous

You have to send a request to get the LG Templates and get the password to access the LG Guides using that page:

https://displaycalibrations.com/lg_templates_for_device_control.html

Your password is not related to all that stuff.

Before starting any measurement, you must prepare the TV by resetting the picture mode using the regular menu, sending factory default values, and uploading a reset 3D LUT.

After uploading the reset 3D LUT, the color gamut option will be grayed out on your TV, and it doesn't matter which option you will see as grayed out (Auto or Wide) since the TV is bypassing it and use the custom 3D LUT you have uploaded.

After those steps, you will continue with the pre-calibration and the profiling.

The LUTs are uploaded only to the specific picture mode and your current HDMI input.

After the end of the calibration, select from the LG TV menu to apply those particular picture mode settings for all inputs, and it will transfer them to all the inputs of your current picture mode.

However, that option will not copy some additional enhancements or settings, so you must manually check and apply them to any of your inputs.

As titleexaminer92 has said, the TV being left in Wide Gamut mode is correct, as the uploaded LUT is dong the calibration.

But, as you have not posted your actual workflow - listing everything you have dine step-by- step - and have not posted the profiles, before and after calibration, it is really impossible to offer any assistance.

Steve

The information required for calibration is just all over the place. I'm getting hit with a lot of after the fact information that should have been given to me up front. I am neither engineer nor programmer nor one of those colorists who is left-brained enough to build their own tools from scratch. I'm going to hire a professional to do this.

The information Ted offered access to is not 'needed'.
But it can be of assistance when someone with a lack of understanding needs more in the way of assistance/knowledge.
And it is linked to on the User Guide page for LG TVs on this website.

However, LG TVs can be rather quirky, and when a LUT doesn't 'apply', swapping input modes, or even powering off/on the TV can rectify the issue.
Such quirks have nothing to do with the calibration software.

Hiring a professional may be a good approach for you - at least initially
But, the LGs drift a lot - far more than professional monitors - and need recalibration on a regular basis.
That is why getting to grips with calibration is a good idea for any facility, especially smaller, independent ones.

Steve

Yeah, I'm gonna go back to the drawing board. Thanks for all your help! I do appreciate it.

Another user has just fallen over a similar issue with LUTs not uploading.
He had the Colour Space set incorrectly within the LG options for the desired input - Rec2020 rather than Rec709.

Steve