4K/HDR test patterns and calibration

[DJR662]

I've seen some test patterns here and there but to my knowledge no standards have been set yet on how to calibrate a 4K TV with HDR.

So I was wondering what the status is of proper ISF 4K/HDR calibration?

I have seen a couple of ISF certified calibrators claiming they can calibrate 4K with HDR but with no actual standards, how accurate can those calibrations be?

[DJJez]

Originally Posted by DJR662

I've seen some test patterns here and there but to my knowledge no standards have been set yet on how to calibrate a 4K TV with HDR.

So I was wondering what the status is of proper ISF 4K/HDR calibration?

I have seen a couple of ISF certified calibrators claiming they can calibrate 4K with HDR but with no actual standards, how accurate can those calibrations be?

on my LG OLED a huge amount of the settings are greyed out so have no idea how HDR can be calibrated properly. the entire white balance menu is greyed out plus gamma as well.

[DJR662]

Originally Posted by DJJez

on my LG OLED a huge amount of the settings are greyed out so have no idea how HDR can be calibrated properly. the entire white balance menu is greyed out plus gamma as well.

Luckily the only settings on my Sony set that are greyed out during HDR playback are local dimming and xtended dynamic range.

We really need 4K/HDR calibration standards ASAP.

[elwaylite]

Chad B can cal '15 and '16 OLEDs for 2D, 3D and HDR modes. The '15's are very limited but the 16's have better results from the charts I have seen.

I downloaded Ryan Masciola's UHD HDR10 patterns onto a thumb drive after I bought them.

[DJR662]

Bumping my own topic.

I'm going to contact my usual calibrator about this. I just saw on his website he does 4K/HDR calibration and has bought himself new calibration tools to do so. I just want to hear what he has to say about it first before I let him come over though.

Although I'm actually fine with my current settings, it still bothers me I haven't had my TV ISF calibrated yet like I usually do.

[Stu123]

Does increasing contrast too much crush blacks?

[Geoff D]

Originally Posted by DJR662

Bumping my own topic.

I'm going to contact my usual calibrator about this. I just saw on his website he does 4K/HDR calibration and has bought himself new calibration tools to do so. I just want to hear what he has to say about it first before I let him come over though.

Although I'm actually fine with my current settings, it still bothers me I haven't had my TV ISF calibrated yet like I usually do.

Review places like AVF and HDTVtest have been calibrating for HDR10 for some time now, using signal generators like the Murideo Six-G (which is Dolby Vision certified, too) and software like CalMAN to measure the results. But now it's filtering down into the 'home enthusiast' level, as Ryan's excellent test patterns are a hell of a lot cheaper than a two-grand signal generator, plus the freely available HCFR calibration software has had an HDR10 workflow for a good few months too.

My resulting SDR 2020 output is kinda like a hybrid, with luminance that tracks like HDR albeit at a much lower peak brightness, and gamma that clearly shows the deeper blacks and brighter brights inherent to the signal, even once converted to SDR. And yet due to the conversion it's behaving more like a relative brightness signal than an absolute one, meaning that I don't suffer with low APL scenes looking too dark, and as it's not locking out any controls nor maxing out the display backlight/contrast this makes adjusting it very easy.

The problem with HDR10 as I see it is the lack of display standards (the UHDA certification is not the same thing), especially tone mapping, rather than calibration standards themselves IMO, though I'm sure Kris Deering could shed some more light on this for us all.

[DJR662]

Originally Posted by Geoff D

Review places like AVF and HDTVtest have been calibrating for HDR10 for some time now, using signal generators like the Murideo Six-G (which is Dolby Vision certified, too) and software like CalMAN to measure the results. But now it's filtering down into the 'home enthusiast' level, as Ryan's excellent test patterns are a hell of a lot cheaper than a two-grand signal generator, plus the freely available HCFR calibration software has had an HDR10 workflow for a good few months too.

My resulting SDR 2020 output is kinda like a hybrid, with luminance that tracks like HDR albeit at a much lower peak brightness, and gamma that clearly shows the deeper blacks and brighter brights inherent to the signal, even once converted to SDR. And yet due to the conversion it's behaving more like a relative brightness signal than an absolute one, meaning that I don't suffer with low APL scenes looking too dark, and as it's not locking out any controls nor maxing out the display backlight/contrast this makes adjusting it very easy.

The problem with HDR10 as I see it is the lack of display standards (the UHDA certification is not the same thing), especially tone mapping, rather than calibration standards themselves IMO, though I'm sure Kris Deering could shed some more light on this for us all.

Although I'm not a complete rookie, your technical knowledge on this exceeds mine by miles (Honestly, I had to look up the definition of APL ). Have you done the calibration yourself using Ryan Masciola's test patterns?

My calibrator has the following tools:

-Klein Instruments K10-A
-X-rite I1pro
-Murideo Fresco SIX-G (the one you mentioned)
-Spectracal Calman 5 software

I guess he could do a pretty good and accurate job then with these?

[Geoff D]

I should hope so, with that list of gear!

[elwaylite]

Yes, he is perfectly setup.