I tried to calibrate a LG OLED G4 77" (latest Firmware) with HTL (version 1.0.0.2103);
SDR worked (with LUT upload);

but I have trouble with HDR (DoVi not tried yet):
the TV was connected as Hardware to HTL; but I see "only" three HDR modi to select from: HDR-Cinema, -Game, -Filmmaker; the TV's user menue has some more; among them "Standard", which is not selectable in HTL, which means I can not calibrate it: the interactive controls don't work with it and the upload of the tone mapping to this mode is not possible;
the problem is that "Standard" provides a max Luma of ~1130 nits (patch size L32); while the other modes are much darker; Cinema for example gave me ~600...

I expected much higher values... Is that the expected Luma range or am I missing a crucial setting?
or do I need to use an even smaller patch size (have not tried it)...
is the integration of the LG G4 incomplete in HTL? I have seen there are newer versions of CS but there is nothing mentioned about better integration of the G4...

The LG integration in ColourSpace is complete.
(But do keep your ColourSpace version updated.)
Only the HDR modes you list are made available by LG for calibration - Cinema, Game, Filmmaker.
As for the peak luma differences - are there differences in the white point/colour temp?

Steve

thanks for the reply;
I will have to double check the color temperature (the TV is at my sisters place...) but I'm confident that I have chosen "warm"

While sending HDR signal from your TPG, reset the CINEMA picture mode, without connecting the TV with ColourSpace, just measure the White to see if you get full nits or 600 (as you say).

Do you have Peak Brightness at HIGH on your TV?

ok, thanks will try this; I will have a chance in a few days; I will come back to you;
Yes, I have set Peak Brightness to High
Thanks

Yeah, I'd double check if you're actually sending an HDR signal to the display during measurements. ~600 nits on a 10% window is around the top end for an MLA panel's peak SDR brightness.

They are available the names of the picture modes that the calibration API allows to calibrate them.

The other modes you can see in the whole TV menu are not calibratable using the internal calibration functions of the TV, so you have to use the regular TV controls if you need to calibrate them (but I find no reason since you have so many picture modes that CAN be calibrated already)

ok, so, it became a couple of weeks (not days) until I was able to access the TV...
today I was able to check HDR-Cinema and HDR-Filmmakermode:
both were in the range of ~590 nits max luminance; "HDR Standard" was at ~1100 Nits; all at color temperature "warm";
- HTL was not connected to the TV
- I reseted the HDR mode (Cinema/Filmmaker)
- OLED Pixel Brightness: 100
- Contrast: 100
- Black Level: 50
- Auto Dynamic Contrast: off (grayed out)
- Dynamic Tone Mapping: off
- Expression Enhancer: off (whatever that is...)
- Peak Brightness: High (greyed out)
- Gamma (adjust Brightness): 2.2
- Video Range: Auto
- Motion Eye Care: off (whatever that is...)
- Colour Depth: 50
- Tint: 0
- Colour Gamut: wide
- Colour Temperature: Warm 50

somewhere, under General I think, HDMI... it was set to "4k"

So, I'm not sure where the Error might be... I assume the Max Luma does not depend on the screen size? After all the number of pixels is constant but the area (pixel size) is not... from 55" to 77"...

an independent question: is it possible to LUT-calibrate the PC-mode of the TV? For example if you have a HTPC connected to it?
Thanks!

today I had a chance to have a look at the LG OLED G4 65" (with newest FW) of a friend;
here I encountered 2 problems:
- also here I was limited to ~590 nits for HDR (for example for HDR-Cinema)
- I was not able to initiate the calibration mode for SDR (HDR and DoVi not tried); when I click on "Kal. On" in the interactive User Control an error message pops up;
the message is something like "the desired picture mode can not be selected"; the same message pops up when I click the picture mode Reset button or try to upload an unity LUT...; but the other settings work in user interface: I can change brightness, OLED light, ....

I even Factory-Resetted the TV without any progress;

to the HDR question: I'm using an old "i1 Display PRO" from X-rite (that is an I1-13.A-02); I understand that the device is only "certified" until 1000nits (but better in the dark areas); could there be a root-cause for the problem?

to the calibration mode: is there a miscomunication between CS and the LG involved?
what I have also observed (bug?): when I adjust "White Balance" in the user interface for IRE100, then go back to "Standard" to adjust e.g. OLED light and then return to "White Balance" the selected IRE is the lowest (2,5) but the values displayed for RGB are those of the last changed (e.g. IRE100)...

error message

The error message suggests that LG model doesn't have calibration capability.
A search on these forums will show more information on that.
Seems an issue with some Eastern European models.

However, you seem to have the colour space set to Rec709, which is incorrect for HDR and may cause such issues.

Steve

oh, this are bad news; I could not find anything on this in this forum or a quick search in the web; could you, please, point me in a direction?
and there can't be done anything about it? ... Service Menue, ...

could you please also comment on the Probe and the HDR maxLuma?
When I switch from HDR-Standard to HDR-Cinema or Filmmaker, the screen dimms visibly down. Could there be some setting (e.g. in the Service Menue) which limits the Brightness?

an other thing I forgot yesterday:
on both TV-Sets, but especially on the 65", I get, not always but some times a popup on the LG (see picture).
It is not predictable, but typically when changing in CS the Picture mode or initiating the Interactive User Interface or changing a setting in there. It is a blank message box with a blank button...
No idea whether I need to click it in order to confirm something or to abort/reject something... after a few sec it goes away...
Any idea what that might be? Whether it is relevant for the calibration?

Thank you for your patience and your answers.

popup

Measure only HDR Cinema or Filmmaker; no need to measure other modes.

Try DeviceControl to see if you can enable calibration:

https://displaycalibrations.com/lg_templates_for_device_control.html

The meter will not stop reading at 1000 nit, it wil display numbers above 1000 nits.

Which meter settings do you use for the meter and your TPG?

Do you use extra delay of 0.5 sec.?

Are you sure that the TV is working in Home mode and not in Store?

Hi Ted, thanks for your reply!
- Device Control: I requested the template and will try as soon as possible
- settings: see pictures
- Home/Store: where can I check this? I do not remember a setting with this items.

Thanks!

General settings

Sensor Options

Hardware Options

The info on some European LG models not having calibration capability is a few threads below this one...
https://lightillusion.com/forums/display-calibration-8/lg-c4-calibration-issue-1281.html

Steve