HCFR - Open source projector and display calibration software - Page 397 - AVS Forum | Home Theater Discussions And Reviews
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post #11881 of 11978 Old 09-09-2019, 05:03 AM
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Originally Posted by Nick Hubbard View Post
Hi, im using the HCFR swatches on the AVR709 disk which i downloaded and burnt.
Ok, can you upload the gamut measurements from calibration based to 100% Luminance and with 75% Luminance patches?

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post #11882 of 11978 Old 09-10-2019, 12:57 AM
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Hello all. I'm chiming in to ask if anyone has experienced a bug with the change white reference option. I've used it previously, but now it's greyed out. When I restart my computer I can change the white point, but when I hit apply it always goes back to d65. Someone please help a guy out.
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post #11883 of 11978 Old 09-10-2019, 02:49 AM
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Originally Posted by chronitis View Post
Hello all. I'm chiming in to ask if anyone has experienced a bug with the change white reference option. I've used it previously, but now it's greyed out. When I restart my computer I can change the white point, but when I hit apply it always goes back to d65. Someone please help a guy out.
You can only change the white point to Custom for standard colour spaces.
Can you attach a screenshot?

Last edited by Dominic Chan; 09-10-2019 at 03:14 AM.
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post #11884 of 11978 Old 09-11-2019, 07:00 AM
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Hi Dominic after some more hours I finally got these results see attachments! I have finally adjusted the all calibration with a 2.4 gamma which looks now amazing. I would be grateful if you could take a look and offer your opinions suggestions. Thank you very very much

Ps I posted some pics taken with my phone just pointing the screen
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post #11885 of 11978 Old 09-11-2019, 03:47 PM
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Sure, I'll chime in with some positive feedback.
A couple of those pics look really really good. Well done. It's a good feeling to finally get in control of your system sometimes 😉


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Originally Posted by jimmyp1974 View Post
Hi Dominic after some more hours I finally got these results see attachments! I have finally adjusted the all calibration with a 2.4 gamma which looks now amazing. I would be grateful if you could take a look and offer your opinions suggestions. Thank you very very much

Ps I posted some pics taken with my phone just pointing the screen
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post #11886 of 11978 Old 09-11-2019, 04:06 PM
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Ah! Do you mean I took at least two good pics or I did a good job with the projector? It’s not that clear haha
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post #11887 of 11978 Old 09-11-2019, 05:30 PM
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I hope Dominic will take a look to the hcfr results... I am really interested in your the comments. Thank you
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post #11888 of 11978 Old 09-11-2019, 06:37 PM
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Originally Posted by jimmyp1974 View Post
I hope Dominic will take a look to the hcfr results... I am really interested in your the comments. Thank you
As I suggested previously, it would be better to run a 20-pt greyscale instead of 10.

Also run a saturation sweep. You will have to google to find out the details.
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post #11889 of 11978 Old 09-11-2019, 07:29 PM
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Originally Posted by Dominic Chan View Post
As I suggested previously, it would be better to run a 20-pt greyscale instead of 10.

Also run a saturation sweep. You will have to google to find out the details.
Thank you very much Dominic. I probably made a mistake in adjusting CMS with 100% saturation sweeps. After reading some threads, as suggested by you, I now realize that I should have used the 75% sweeps. Is my thought correct? Do you see in my results under saturation? Besides that gray scale and gamma are ok? I hope to not bother you with all these questions. Thank you again
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post #11890 of 11978 Old 09-11-2019, 07:52 PM
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Originally Posted by jimmyp1974 View Post
Thank you very much Dominic. I probably made a mistake in adjusting CMS with 100% saturation sweeps. After reading some threads, as suggested by you, I now realize that I should have used the 75% sweeps. Is my thought correct? Do you see in my results under saturation? Besides that gray scale and gamma are ok? I hope to not bother you with all these questions. Thank you again
And also I would like to better understand the relationship between the color option included in the main settings and the CMS settings. I understand that operating on that option you can increase or decrease saturation, but I am wondering how can I know that ? Thank you
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post #11891 of 11978 Old 09-11-2019, 08:52 PM
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Originally Posted by jimmyp1974 View Post
Thank you very much Dominic. I probably made a mistake in adjusting CMS with 100% saturation sweeps. After reading some threads, as suggested by you, I now realize that I should have used the 75% sweeps. Is my thought correct?
Not necessarily. Without seeing the saturation sweep one cannot predict whether 100% works better than 75%, or the other way round.

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Do you see in my results under saturation? Besides that gray scale and gamma are ok? I hope to not bother you with all these questions. Thank you again
It’s hard to tell from a single point. The saturation sweep will provide a more complete picture.
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post #11892 of 11978 Old 09-12-2019, 04:03 AM
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Thank you very much Dominic. Tonight I will run the saturation sweep. Now I have a basic question. Let’s say that the saturation sweep reveals some under or over saturation at 30% or 50% or 75% what should I do in those cases? I set the CMS with 100% saturated colors patterns. Thank you very much for your kindness and support
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post #11893 of 11978 Old 09-12-2019, 05:16 AM
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Originally Posted by jimmyp1974 View Post
Thank you very much Dominic. Tonight I will run the saturation sweep. Now I have a basic question. Let’s say that the saturation sweep reveals some under or over saturation at 30% or 50% or 75% what should I do in those cases? I set the CMS with 100% saturated colors patterns. Thank you very much for your kindness and support
Since the CMS adjustment will affect all the saturation points, you will need to aim for the best overall calibration. You may have to “sacrifice” the 100% point to get a better match for the lower saturation points.
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post #11894 of 11978 Old 09-12-2019, 12:13 PM
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Thank you Dominic very helpful. I have a little question: is the AVSHD 709 disc good to run the saturation sweeps? Thank you
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post #11895 of 11978 Old 09-12-2019, 01:00 PM
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Thank you Dominic very helpful. I have a little question: is the AVSHD 709 disc good to run the saturation sweeps? Thank you
AVSHD is OK but you should also look at Ted’s disc.

I now use HCFR internal (automatic) patterns, but you need to check them against disc patterns first. .
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post #11896 of 11978 Old 09-12-2019, 11:37 PM
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Hi , can someone give me an idea how to calibrate gamma curve in 3D mode ? I have tried to follow the bt1886 Target Y , but the end results is crazy dim picture ! In the HCFR , I can only get 9nits in 100% white under 3D mode engaging ! Any input is appreciated!
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post #11897 of 11978 Old 09-13-2019, 01:16 AM
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Hi can someone pls kindly explain the parameters of “Gamma Calculation(SDR)” and the “EOFT (HDR)” ?

“Gamma Calculation(SDR)”
What is “Override Black” and when need to be used ?

When to use “Display Gamma (black compensation)”?

For ITU-RBT.1886 ,
What is the meaning of “Effective @50%(0=Absolute)” ?
What parameter should be set except of default “0”?

What is the meaning of “% input offset” ?
What parameter should be set for except of default “100%”?

What is “L*” meaning and when to use ?

“EOFT (HDR)”
For SMPTE 2084 HDR ,
When to use “Override Targets” and “BT.2390”?

What is “Diffuse White” mean and the correct value ?

What is “Target MinL” mean and the correct value ?

What is “Target MaxL” mean and the correct value ?

What is “Master MinL” mean and the correct value ?

What is “Master MaxL” mean and the correct value ?

What is “Content MaxL” mean and the correct value ?

What is “Frame Avg. MaxL” mean and the correct value ?

Really need the help to master this parameters and value and what is it means for my Calibration ! Any inputs and educations provide is really appreciated ! Thx for the help if someone can explain to me !
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post #11898 of 11978 Old 09-13-2019, 06:36 AM
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Hi can someone pls kindly explain the parameters of “Gamma Calculation(SDR)” and the “EOFT (HDR)” ?

“Gamma Calculation(SDR)”
What is “Override Black” and when need to be used ?

When to use “Display Gamma (black compensation)”?

For ITU-RBT.1886 ,
What is the meaning of “Effective @50%(0=Absolute)” ?
What parameter should be set except of default “0”?

What is the meaning of “% input offset” ?
What parameter should be set for except of default “100%”?
Almost all of these questions have been answered previously and you can find the answers by doing an advanced search; e.g.,

Override Black:
https://www.avsforum.com/forum/139-d...l#post43138098

Effective @50%:
https://www.avsforum.com/forum/139-d...l#post55062396

% input offset:
https://www.avsforum.com/forum/139-d...l#post31357793
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post #11899 of 11978 Old 09-13-2019, 08:42 AM
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Quote:
Originally Posted by Dominic Chan View Post
Almost all of these questions have been answered previously and you can find the answers by doing an advanced search; e.g.,

Override Black:
https://www.avsforum.com/forum/139-d...l#post43138098

Effective @50%:
https://www.avsforum.com/forum/139-d...l#post55062396

% input offset:
https://www.avsforum.com/forum/139-d...l#post31357793
Thx a lot ! I figure it out now for BT.1886 ! How abt the other parameter ? And can u suggest how to calibrate gamma curve in 3D mode ?
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post #11900 of 11978 Old 09-13-2019, 08:43 AM
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Quote:
Originally Posted by Dominic Chan View Post
Quote:
Originally Posted by chronitis View Post
Hello all. I'm chiming in to ask if anyone has experienced a bug with the change white reference option. I've used it previously, but now it's greyed out. When I restart my computer I can change the white point, but when I hit apply it always goes back to d65. Someone please help a guy out.
You can only change the white point to Custom for standard colour spaces.
Can you attach a screenshot?
Hello Dominic, Thank you for getting back to me. My computer is being stupid at the moment, so here's a picture I took. I know it's crude, but it's what I can do for now.Click image for larger version

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post #11901 of 11978 Old 09-13-2019, 08:46 AM
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It has my custom white point in the settings when I restart the program, and then it reverts to d65 and Grey's everything out when I take measurements.
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post #11902 of 11978 Old 09-13-2019, 08:54 AM
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Originally Posted by chronitis View Post
Hello Dominic, Thank you for getting back to me. My computer is being stupid at the moment, so here's a picture I took. I know it's crude, but it's what I can do for now.Attachment 2614684Attachment 2614684
Unfortunately I can't open your screenshots.
What colour space are you using for your custom white point?

If things used to work but have stopped working for no apparent reason, try deleting the ColorCHFR.ini file and re-open HCFR.
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post #11903 of 11978 Old 09-13-2019, 11:20 AM
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Hi Dominic I adjusted again the calibration including the saturation sweeps. It seems good to me with few exceptions that I wasn't able to fix. I would be grateful if you could take a look report your opinions/suggestions on it. Thank you infinitely!
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post #11904 of 11978 Old 09-13-2019, 12:13 PM
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Quote:
Originally Posted by Dominic Chan View Post
Quote:
Originally Posted by chronitis View Post
Hello Dominic, Thank you for getting back to me. My computer is being stupid at the moment, so here's a picture I took. I know it's crude, but it's what I can do for now.Attachment 2614684Attachment 2614684
Unfortunately I can't open your screenshots.
What colour space are you using for your custom white point?

If things used to work but have stopped working for no apparent reason, try deleting the ColorCHFR.ini file and re-open HCFR.
I've been using rec 709 for SDR and dci-p3 in rec2020 container for HDR. It worked prior to the problems I've been having. I'll do what you said in hopes that it will work.
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post #11905 of 11978 Old 09-13-2019, 12:29 PM
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I guess my next question after getting this working again would be if you use rec 2020 or dci p3 in rec2020 container to calibrate hdr? I've always used the latter, but I feel like I may be using the wrong option.
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post #11906 of 11978 Old 09-13-2019, 12:36 PM
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I guess my next question after getting this working again would be if you use rec 2020 or dci p3 in rec2020 container to calibrate hdr? I've always used the latter, but I feel like I may be using the wrong option.
HCFR does not allow custom white points for Rec2020/P3.

You can use either Rec2020 or Rec2020/P3, but in the former case you may have to limit yourself to 50% saturation as no commercial displays can reach 100% saturation.
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post #11907 of 11978 Old 09-13-2019, 12:40 PM
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Originally Posted by jimmyp1974 View Post
Hi Dominic I adjusted again the calibration including the saturation sweeps. It seems good to me with few exceptions that I wasn't able to fix. I would be grateful if you could take a look report your opinions/suggestions on it. Thank you infinitely!
Red and Blue are quite a bit under-saturated at 50% and 75%
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post #11908 of 11978 Old 09-13-2019, 01:30 PM
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Quote:
Originally Posted by Dominic Chan View Post
Quote:
Originally Posted by chronitis View Post
I guess my next question after getting this working again would be if you use rec 2020 or dci p3 in rec2020 container to calibrate hdr? I've always used the latter, but I feel like I may be using the wrong option.
HCFR does not allow custom white points for Rec2020/P3.

You can use either Rec2020 or Rec2020/P3, but in the former case you may have to limit yourself to 50% saturation as no commercial displays can reach 100% saturation.
I deleted the ini file and it seems to be working again. It actually does let me use a custom white point for rec2020/P3. Is that the one I should calibrate to, since most uhd movies are dci p3 in a rec 2020 container, or just straight up rec 2020? I know it sounds like a redundant question, but there's gotta be a difference between the two. Thank you Dominic.
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post #11909 of 11978 Old 09-13-2019, 01:33 PM
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I've read conflicting things. Some say to calibrate to rec 2020, because the dci p3 coordinates are inside the triangle, and will automatically display correctly. Others say to calibrate the dci p3 triangle inside of the rec 2020 container. It's all so confusing. And to think I thought I had this all figured out 6 months ago...
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post #11910 of 11978 Old 09-13-2019, 01:55 PM
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Quote:
Originally Posted by chronitis View Post
I deleted the ini file and it seems to be working again. It actually does let me use a custom white point for rec2020/P3. Is that the one I should calibrate to, since most uhd movies are dci p3 in a rec 2020 container, or just straight up rec 2020? I know it sounds like a redundant question, but there's gotta be a difference between the two. Thank you Dominic.
For ideal displays there would be no difference between calibrating to rec2020/P3 vs calibrating to rec2020. For consumer displays the former is recommended as they cannot reach rec2020 gamut, so you'll end up with huge dE. Using rec2020/P3 is just selecting the P3 gamut as calibration targets, but the coordinates are still rec2020 (i.e., you should not calibrated to "plain" P3).
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