Good news for owners of 2019 LG OLED's that use ColourSpace/LightSpace. You can now easily and freely (manually) calibrate Dolby Vision/HDR using the built in iTPG of the TV controlled directly by ColourSpace/LightSpace with the latest version of the Device Control Template for 2019 LG OLED's.
Whilst the procedure is extremely simple, it cannot of course be validated after without the use of an external DV compatible TPG. This is due to the placement of the iTPG in the image pipeline. But I have managed to verify with externally generated Dolby Vision patterns (both over HDMI and USB) that if done correctly, then the conversion from 2.2 Gamma to PQ EOTF is correct and valid.
Whilst it is a fully manual adjustment of the 22 point white balance controls of the LG User Menu, with the use of ColourSpace it is extremely simple do to the updated user interface and the ability to load custom csv patch sets within the Manual Measure window. It can also be done within LightSpace but it is unfortunately a little more difficult due to the way you have to dip in and out of various menus, and manually adjust the RGB sliders to line up with the LG's internal 22 point white balance controls.
As always, the base starting point is taken from the Pre Calibrated Service Menu WB as it gives a good foundation for all to be calibrated from. Then, using the latest version of Device Control Template for the 2019 LG OLED, you can connect to your TV and enable the iTPG whilst playing some Dolby Vision content in the background, and connect to the iTPG with ColourSpace using the Network Server.
You then load a preset csv containing the triplets that align with the LG 22 point user controls and take a greyscale sweep targeting 2.2 Gamma. From there you can manually adjust the 22p greyscale by simply selecting each individual patch in turn and making the required adjustments from the TV user menu to eventually end up with with something like this
Tracking of 2.2 Gamma
And RGB Balance
Once complete, you can then measure Black, RGBW (with a preset csv) to record these values
Using these recorded values, you can "manually" edit a DV Config file to contain your peak white, black and primary coordinates, and upload this to the TV via a USB thumb drive.
After conformation that the DV Config (CFG) has been applied, then DV calibration is complete. As stated, you cannot validate it without the use of an external DV TPG, but I have and can confirm that it does convert correctly
This is PQ tracking using an external DV TPG over HDMI measuring 20 point GS
And this is PQ tracking using R.Masciola's DV test patterns (20 point GS) from USB
For HDR, things are even more simple. All that is required for HDR is to simply once again use the Pre Calibrated SM WB as a starting point, and either adjust 2 Point High in the user menu (using a 65% grey patch) or 2 Point Low/High (using 20/70% patches). If required, then you can use the 10 point or 22 point user controls to tweak Code Value 1023, but it really isn't necessary.
LG uses 10 bit Full Range Code Values for it's user menu White Balance controls, and these are mainly clustered between (approximately) 16% - 70%. Any significant or large adjustments to these points one way or the other can introduce image issues. It is easier and safer to adjust just the couple of points suggested because the TV already tracks 2.2 Gamma very closely in HDR and RGB Balance is equally already pretty good.
The factory 3x3 CMS Matrix is also already very good, so colour management adjustments are not required. But, using the Device Control 2019 LG OLED PQ Curve Template you can upload your peak luminance and custom tone curves if you wish. This has been available for quite some time though so many will already be familiar with doing this.
I have been running these calibrated modes on my LG OLED 65C9 now for several weeks testing in all kinds of various content and have to say it is looking very good indeed. UHD HDR Blu-Ray with many types of metadata (all the way to the 10,000 nit Inferno disk) looks stunning, as do UHD Dolby Vision disks (Spiderman FFH, Black Panther). Streaming content (Netflix, Apple TV App, Amazon Prime etc...) is just as impressive. It just works!
Furthermore, there is no raised/crushed blacks in HDR as no custom 1D LUT has been used, and I see no raised blacks (with the exception of the known ATV 4K) with DV disks from my Panasonic UB820 over HDMI or any of the built in DV capable apps. And there is no
black clipping with either R.Masciola’s Black Clipping patterns or Stacey Spears Dynamic Range Low pattern that was kindly provided to the community recently to troubleshoot Dolby Vision black level clipping after AutoCAL when played over USB.
All in all, it may be going back to manual calibration of these two modes but ColourSpace makes it all so easy and it is the absolute best I can get out of my TV in these modes. Best of all it is a free DV/HDR TPG that can be controlled automatically from both ColourSpace and LightSpace.
To be able to activate the iTPG to control via ColourSpace/LightSpace, you will need the latest version of Device Control and LG 2019 Template Rev.4. To find out how to get this you will need to contact
via his website
where he will provide you with instructions. He will also be able to provide you with a zip file package that contains the preset csv files I have created, along with slightly more detailed instructions and other files that may be of some use.
Before anyone asks, all of this currently applies to the 2019 LG iTPG capable TV's only
. I do not have access to a 2020 model LG so cannot test, and as the 2018 models have no built in iTPG it will never apply to those sets.
Sorry for the long winded post, but hopefully it will be of use to some of you!