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post #781 of 786 Old 04-06-2019, 03:12 PM
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I'm trying to do my first HDR calibration using HCFR. I have a Panasonic OLED FZ950/952.

I've read a lot of threads and find the information all over the place for a novice.

Here's what I (think) I kwnow:

1 - HCFR Preferentes:



2- Uncalibrated results:



3 - The only settings that produce any change in those readings are the cutoff adjustiments in 2-point WB. Gain, 12-point WB, CMS and gamma I get nothing.

Here's what I don't know:

- What I'm doing wrong? I can't figure out the steps I should take to do the calibration.

- Should I calibrate CMS or not?

Can you give me some pointers?
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post #782 of 786 Old 04-06-2019, 05:58 PM
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First, ensure you are sending an actual 10% HDR10 box, using MadVR or similar, and select MadVR in the generator option menu where you find the HDR10 checkbox.

Second, instead of looking at RGB, select luminance - gamma (absolute Y), so you can see the brightness curve, then do your 10 points at each point using continuous measuring...just bump each R G and B until you match the RBG value and luminance requested by HCFR. You can view R G and B on the luminance graph if you wish. Maybe do 2 point at 80%, then 30%, before moving on to 10 point and start at 10% and work your way up the scale. Around 60-70% you will have weirdness as it tries to roll off the highlights.

Might also consider Content MaxL at 2000 or 4000, since that is what most movies are mastered at. MaxL of 1000 would make everything in the midtones brighter and the whole HDR effect less contrasty.

Paul

Quote:
Originally Posted by ChavesBR View Post
I'm trying to do my first HDR calibration using HCFR. I have a Panasonic OLED FZ950/952.

I've read a lot of threads and find the information all over the place for a novice.

Here's what I (think) I kwnow:

1 - HCFR Preferentes:



2- Uncalibrated results:



3 - The only settings that produce any change in those readings are the cutoff adjustiments in 2-point WB. Gain, 12-point WB, CMS and gamma I get nothing.

Here's what I don't know:

- What I'm doing wrong? I can't figure out the steps I should take to do the calibration.

- Should I calibrate CMS or not?

Can you give me some pointers?
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Sony X900F SDR and HDR Calibrations https://www.avsforum.com/forum/166-l...l#post57551552
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post #783 of 786 Old 04-07-2019, 10:21 AM
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Quote:
Originally Posted by Anderegg View Post
First, ensure you are sending an actual 10% HDR10 box, using MadVR or similar, and select MadVR in the generator option menu where you find the HDR10 checkbox.

Second, instead of looking at RGB, select luminance - gamma (absolute Y), so you can see the brightness curve, then do your 10 points at each point using continuous measuring...just bump each R G and B until you match the RBG value and luminance requested by HCFR. You can view R G and B on the luminance graph if you wish. Maybe do 2 point at 80%, then 30%, before moving on to 10 point and start at 10% and work your way up the scale. Around 60-70% you will have weirdness as it tries to roll off the highlights.

Might also consider Content MaxL at 2000 or 4000, since that is what most movies are mastered at. MaxL of 1000 would make everything in the midtones brighter and the whole HDR effect less contrasty.

Paul
Thanks for the reply.

I'm using this patters: Mehanik HDR10 calibration and test patterns set

The problem I'm having is that changing the TV settings does nothing to the curve, even luminance, except the case I mentioned before.

The content settings are the ones that appear on the patterns.
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post #784 of 786 Old 04-08-2019, 12:39 AM - Thread Starter
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Originally Posted by WiFi-Spy View Post
Tri-linear interpolation. The Blackmagic Teranex mini is the only LUT box I know of that is using Tetrahedral interpolation ( Resolve has it as an option also in software).
Tetrahedral LUT Interpolation is coming soon as a free firmware update for FSI BoxIO LUT Box also.

Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS / CalMAN ColorChecker / HCFR
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, ControlCAL
V/P: eeColor 3D LUT Box - P/G: DVDO AVLab TPG
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5
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post #785 of 786 Old 05-01-2019, 12:47 PM
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COuld someone explain to me how to do 10 point greyscale for HDR? I brought up everything under preferences, but I don't have the EOTF portion of it to change the Content MaxL either.

Edit: I had an older version of HCFR, but I'm hoping I can actually get 20 point to move for me. 20 point seemed locked previously. Like brightness and contrast are up or down too far to let me calibrate it.

Last edited by toby5; 05-01-2019 at 04:51 PM.
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post #786 of 786 Old 05-12-2019, 03:31 AM
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Originally Posted by toby5 View Post
COuld someone explain to me how to do 10 point greyscale for HDR? I brought up everything under preferences, but I don't have the EOTF portion of it to change the Content MaxL either.

Edit: I had an older version of HCFR, but I'm hoping I can actually get 20 point to move for me. 20 point seemed locked previously. Like brightness and contrast are up or down too far to let me calibrate it.
Did you figure this out?

You need to have the generator HDR10 box checked, then in the advanced menu box thing select ST2084 and you will se the MaxCLL and other various boxes. If you change numbers and click apply, you will see the luminance curve change...I typically do a 2000 and then double check that the 1000 and 4000 curves are not wildly out of control. Sometimes messing with the gamma while doing your 2 point will bring your curve to an area where your 10 point controls don't run out of adjustment. Good idea also to run any HDR reads using 20 point, even if your TV only has 10 point controls...my Sony points don't match the HCFR points, I had to make a chart on paper of what % which 10 point actually adjusts in HDR.

And how are you generating HDR patterns? Don't forget to not try to match the rolloff curve at like 70%.

Generic QUESTION here for the authorities...I have been doing HDR10 calibrations outputting 10 bit YCBCR limited...should I be doing this is 8 bit full RGB instead? My Nvidia card can't do 10 bit in 1080p (only 8 or 12) and can't do 10 bit and RGB in 4K...ugh.

paul

Sony X900F SDR and HDR Calibrations https://www.avsforum.com/forum/166-l...l#post57551552
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