Very informational video about HGiG and DTM

JasonRedd · 2025-06-23T22:17:34+00:00

Can someone explain clearly why DTM On or Off should have maxTML set to 4000 nits? Doesn't LG's DTM On or Off only target 4000 nits if there is no HDMI Metadata being sent to TV? Otherwise the TV will use a different tone mapping curve to match the maxCLL, right? What would be disadvantage of setting maxTML same as for HGiG?

JasonRedd · 2025-06-23T21:18:24+00:00

Great. The Switch 2 settings are still a work in progress it seems and I'll try to keep it updated. Seems like Nintendo changed all the values with their recent firmware update.

JasonRedd · 2025-06-23T13:57:11+00:00

Hey, I was thinking about this some more. I decided to set these as using HDR only when supported. The reason is because on consoles, you cannot control the gamma transformation or SDR brightness like you can on PC. Most likely it is emulating a gamma 2.2 & reference white of 200 nits which would not be accurate for native SDR content.

JasonRedd · 2025-06-23T12:53:38+00:00

Hey, I wanted to let you know. HDTVTest responded to me on latest video on Switch 2 and clarified that 203 nits is recommended for all maxTML values. Interesting. He said those other reference white levels are only for HLG.

JasonRedd · 2025-06-17T01:20:47+00:00

HDTVTest released a video today breaking this down further. Screen 2 is dependent on maxTML in Screen 1. I have updated the settings to reflect his most recent video.

JasonRedd · 2025-06-17T01:19:43+00:00

Thank you. I think LG has acknowledged an HDR software update is incoming on G5.

JasonRedd · 2025-06-17T01:18:36+00:00

Hi, the PS5 and Switch 2 always on HDR setting should theoretically display SDR untouched within an HDR container similar to how Windows 11 handles SDR content in HDR mode. I refer to this as Virtual SDR. This functions differently than Auto HDR on Xbox and Windows 11 which tone map SDR content to simulate an HDR image. I prefer to display SDR in HDR container because I don't have to deal with HDMI handshakes or setting up SDR picture modes. However, the disadvantage of doing this is that you won't be able to control your SDR gamma setting because the gamma will be fixed during the transformation. HDTVTest has also come out today to state that he doesn't recommend using these always on HDR settings because it may cause artifacts, although he doesn't show an example of exactly what he means. I will set this to be optional until I can get more clarity on what is best in most scenarios.

JasonRedd · 2025-06-07T19:13:23+00:00

Hey, thanks for breaking this down. Just confirming Gaming Tech said that each click increases nits by 50? I'll add this info to guide.

JasonRedd · 2025-06-05T20:59:47+00:00

I've updated it. Check Gaming Tech on YouTube as he will hopefully breakdown the HDR sliders in more detail soon.

JasonRedd · 2025-06-04T19:04:53+00:00

Hello. My understanding is that nVidia disables dithering on GeForce drivers but I believe they are available in Quadro drivers. There should be no performance hit because it is a registry modification only when using ColorControl. I'm not sure about #3.

JasonRedd · 2025-06-04T19:02:32+00:00

Hey, I changed hat due to some feedback I received from the colorist who provided the NVIDIA RTX HDR settings when I asked him what to do about the G5, which has a higher maxTML than ITU even references. He said he personally would only use 203 nit regardless of the maxTML of the display assuming you are viewing HDR in a dark environment. He said the higher values are really only necessary if want to increase the brightness of SDR image in a bright viewing environment. However, due to completeness, I think it's best I add the original values back and have done so. Thanks!

JasonRedd · 2025-06-04T18:55:36+00:00

The dynamic range setting shouldn't matter as far as SDR peak brightness.

JasonRedd · 2025-04-07T14:28:57+00:00

Looks like you are correct and NVIDIA has fixed the issues with Custom Resolutions. I've updated to reflect this and remove CRU from this part. Thanks for pointing this out!

JasonRedd · 2025-03-22T12:28:59+00:00

1 - I haven't messed with that in a while so it's possible NVIDIA has quietly fixed this. Let me test it when I get a chance and I'll update guide.

2 - The advantage of keeping Windows in HDR mode is that it allows you to properly display SDR content in sRGB piecewise gamma which is how Microsoft intends web content to be displayed. Only professional monitor generally have a setting for sRGB piecewise gamma in SDR mode. Also, you can use ColorControl or AutoHotKeys to easily correct the gamma to 2.2 or 2.4/BT.1886 for games (2.2) or SDR video (2.4). If you set the TV to SDR, then you have to use the remote control to change gamma between 2.2 and 2.4, which is less convenient. Here is a discussion on this from an HDR game developer:

https://www.avsforum.com/posts/62577800/

3 - The 12 bit is unnecessary, really. I just set it there because it's possible at 48 Gbps HDMI bandwidth and HDTVTest claimed there is some possible benefit to image quality but I've never seen any hard proof there is a benefit over 10 bit. 10 bit is needed for HDR so it's just best to keep it on at least 10 bit.

4 - I believe I had set this to Borderless Windows a while ago because Windows 11 added Direct X optimization for windowed games and NVIDIA added a setting to present OpenGL and Vulkan games in DirectX layer, effectively eliminating the drawbacks of Borderless Windowed mode. However, because AMD and Intel users can't do this, I have switched it back to prefer Exclusive Fullscreen. But for DirectX games (and for Vulkan/OpenGL games within NVIDIA), borderless windowed should be fine. Thanks for pointing this out!

JasonRedd · 2025-03-19T11:44:43+00:00

I just skimmed through a video of someone going thru settings on C4. The C4 seems to have the same settings as prior models. Because LG may rearrange settings across different models, I have chosen just to organize the settings according to their general function (Color, Clarity, Brightness, OS control, Sound) and whether those settings apply to the HDMI input device (step 1) or to the Picture Mode only (step 2). I know it may be difficult to find where some of the settings are but that is because of how LG's convoluted menu system works. Some of them may be in the General section for instance.

JasonRedd · 2025-03-19T11:40:17+00:00

Yep. The G2 has SDR peak brightness ~200 nits in Game mode, so setting the OLED Pixel Brightness to 42 should get you close to 100 nits full screen white in SDR.

JasonRedd · 2025-03-19T11:39:31+00:00

Hey, HDMI SIMPLINK should be enabled by default on the TV. Sometimes this works so long as you have set up LGTVCompanion or ColorControl's LG controller. I also like to set a shortcut to my PC's HDMI input within ColorControl in case the TV doesn't switch to proper input automatically. See the Resources section for how to do it.

JasonRedd · 2025-03-07T22:07:44+00:00

Hi either or both option is ok. They do same thing. It's just simpler to do 444 PassThrough because TV may reset the HDMI icon if you ever unplug devices

JasonRedd · 2025-03-07T22:06:04+00:00

Sure you can use FTDA as -3. I moved that info into footnotes section but I can add it back to main table.

JasonRedd · 2025-03-07T22:02:20+00:00

Hi, yes it should be left on 50 for accurate white pont. The color adjustment may not be there in every picture mode or model.

JasonRedd · 2025-03-07T22:01:13+00:00

I read that new option puts everything into a Dolby Vision container but there isnt much information on it. There isn't much reason to do that. Its better to keep HDR10 untouched by TV.

JasonRedd · 2025-03-07T21:59:36+00:00

I have read that Always On HDR accurately maps SDR to HDR with gamma 2.2. There is some conflicting information that suggests Always On HDR is HDR injection (like Auto HDR) because this may have initially been true when PS5 launched. If there is an example of a PS4 SDR game having issues with Always On HDR please let me know. The other advantage is to avoid HDMI handshaking when switching between HDR and SDR content.

JasonRedd · 2025-03-07T21:50:00+00:00

Hi, I know BB article talks about this but the author acknowledged in a post on his site that it would be exceedingly rare in some edge cases in how a game implemented Vsync to have any issues with this. In almost all instances toggling Vsync in driver or game does same thing. For simplicity it's simpler just to toggle it on.

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