HDR Colour Accuracy

[OliviaSoSilly]

My Razer Laptop came with a preconfigured not HDR colour profile so it's colour accurate. My question was how do i make the HDR profile colour accurate as the colours look slightly off

[adm0n]

The first thing you can do, is use the windows HDR calibration app. This only affects brightness though. (If you have a miniLED version, don't look at the graphics, but just put the sliders to the brightness on the spec sheet of your laptop).

 

Just to make sure, are you talking about HDR colors looking wrong, or is it the SDR colors looking wrong in HDR mode (so things like your desktop, browser, ..., instead of HDR movies and games). If this is the case, you can also check out this github repo: https://github.com/dylanraga/win11hdr-srgb-to-gamma2.2-icm/tree/main

Basically windows applies a weird gamma curve to all SDR content. This will also slightly change correctly mastered HDR content though, so read though the readme first before applying it.

 

For anything beyond that, you need the hard/software to create an advanced (HDR) color profile. Not sure how to do that exactly.

[OliviaSoSilly]

1 hour ago, adm0n said:

The first thing you can do, is use the windows HDR calibration app. This only affects brightness though. (If you have a miniLED version, don't look at the graphics, but just put the sliders to the brightness on the spec sheet of your laptop).

 

Just to make sure, are you talking about HDR colors looking wrong, or is it the SDR colors looking wrong in HDR mode (so things like your desktop, browser, ..., instead of HDR movies and games). If this is the case, you can also check out this github repo: https://github.com/dylanraga/win11hdr-srgb-to-gamma2.2-icm/tree/main

Basically windows applies a weird gamma curve to all SDR content. This will also slightly change correctly mastered HDR content though, so read though the readme first before applying it.

 

For anything beyond that, you need the hard/software to create an advanced (HDR) color profile. Not sure how to do that exactly.

Thank you so much!! How do I see the brightness on the spec sheet? its not listed on the website 

[OliviaSoSilly]

2 minutes ago, OliviaSoSilly said:

Thank you so much!! How do I see the brightness on the spec sheet? its not listed on the website 

Okay wait a sec, I found it burried in more spec sheets, do i set it to the HDR nits or the SDR nits

[adm0n]

1 minute ago, OliviaSoSilly said:

Okay wait a sec, I found it burried in more spec sheets, do i set it to the HDR nits or the SDR nits

The HDR brightness. This will be the maximum brightness HDR content can have, if you turned your screen to maximum brightness as well.

[OliviaSoSilly]

1 minute ago, adm0n said:

The HDR brightness. This will be the maximum brightness HDR content can have, if you turned your screen to maximum brightness as well.

Thank you so much for all your help!!

[OliviaSoSilly]

2 minutes ago, adm0n said:

The HDR brightness. This will be the maximum brightness HDR content can have, if you turned your screen to maximum brightness as well.

One last thing, how do i do minimum brightness in the hdr calibration tool 

[adm0n]

18 minutes ago, OliviaSoSilly said:

One last thing, how do i do minimum brightness in the hdr calibration tool 

That depends on what your monitor can do. If it is a MiniLED you can just set it to 0. Otherwise you can use the graphic to test it.

21 minutes ago, OliviaSoSilly said:

Thank you so much for all your help!!

You are very welcome!

 

Not sure if you know about it, but you can also transform non HDR content into HDR content with tools from Nvidia or Windows inbuild ones.

In the nvidia control panel you can enable RTX HDR Video, which will automatically convert youtube videos to HDR and RTX HDR works for games in the same way.

[OliviaSoSilly]

6 minutes ago, adm0n said:

That depends on what your monitor can do. If it is a MiniLED you can just set it to 0. Otherwise you can use the graphic to test it.

You are very welcome!

 

Not sure if you know about it, but you can also transform non HDR content into HDR content with tools from Nvidia or Windows inbuild ones.

In the nvidia control panel you can enable RTX HDR Video, which will automatically convert youtube videos to HDR and RTX HDR works for games in the same way.

Thank you so so much :DD that was very helpful /gen

[starsmine]

8 hours ago, adm0n said:

(If you have a miniLED version, don't look at the graphics, but just put the sliders to the brightness on the spec sheet of your laptop).

Wait what?
This advice is so antithetical to every thing I have read on it. 
My understanding has to been go till it "disappears" then go one notch back. 

 

6 hours ago, adm0n said:

That depends on what your monitor can do. If it is a MiniLED you can just set it to 0. Otherwise you can use the graphic to test it.

You are very welcome!

Why would you do that on a miniled? its just a full array led backlight like all the other LCD monitors out there that are not edge lit. 

[adm0n]

1 hour ago, starsmine said:

Wait what?
This advice is so antithetical to every thing I have read on it. 
My understanding has to been go till it "disappears" then go one notch back. 

So I cannot tell you why this actually happens, but from what I've read, the algorithm determining how bright the dimming zones get, messes things up in this synthetic environment. And at least on the miniLED screen I own, for setting the brightness there is nothing that could disappear, it is completely white at all times.

1 hour ago, starsmine said:

Why would you do that on a miniled? its just a full array led backlight like all the other LCD monitors out there that are not edge lit. 

Because if you have a miniLED array, the lowest brightness they can produce is by turning off. Thus turning everything part of that dimming zone to zero brightness. If the monitor is working as intended, setting the brightness to zero is the correct thing to do (this part of the test should also work as far as I know, at least it worked for me, although you need to be in a completely dark environment to see the difference between the states).

[starsmine]

32 minutes ago, adm0n said:

Because if you have a miniLED array, the lowest brightness they can produce is by turning off. Thus turning everything part of that dimming zone to zero brightness. If the monitor is working as intended, setting the brightness to zero is the correct thing to do (this part of the test should also work as far as I know, at least it worked for me, although you need to be in a completely dark environment to see the difference between the states).

But you are not actually trying to black out the screen. There IS an object in the middle. turning it to zero clips it away. Which is why the instructions of crank it till its gone is misleading. it puts the calibration one step beyond what it ideally should be. 

The instructions for calibration are the way the are because other else people more often then then not go signficantly more then one step off in the wrong direction. 

[adm0n]

1 hour ago, starsmine said:

But you are not actually trying to black out the screen. There IS an object in the middle. turning it to zero clips it away. Which is why the instructions of crank it till its gone is misleading. it puts the calibration one step beyond what it ideally should be. 

I'm pretty sure you are supposed to make it disappear. That way you are telling it which black value is exactly the same as the blackest color your monitor can produce. This is the same as for the step with the brightness.

 

Turning it to zero always makes it disappear, because you are sending the exact same signal to the monitor for all pixels then. But if your monitor adequately supports HDR in the correct way, it could also show other values as the same color.

 

My Samsung TV for example maps everything it receives automatically to it's supported range. So I have to push the slider all the way to whatever the current HDR profile tells it, that is maximum range is and all the way to zero for it to disappear. But I also have a cheap external OLED monitor, that kinda supports HDR but weirdly already turns its pixels off at something else at 0. But HDR is pretty much unusable on that one sadly :c

[starsmine]

10 minutes ago, adm0n said:

I'm pretty sure you are supposed to make it disappear. That way you are telling it which black value is exactly the same as the blackest color your monitor can produce. This is the same as for the step with the brightness.

 

Turning it to zero always makes it disappear, because you are sending the exact same signal to the monitor for all pixels then. But if your monitor adequately supports HDR in the correct way, it could also show other values as the same color.

 

My Samsung TV for example maps everything it receives automatically to it's supported range. So I have to push the slider all the way to whatever the current HDR profile tells it, that is maximum range is and all the way to zero for it to disappear. But I also have a cheap external OLED monitor, that kinda supports HDR but weirdly already turns its pixels off at something else at 0. But HDR is pretty much unusable on that one sadly :c

looking into where I got my information, looks like i grossly misremembered. You are correct.