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post #61 of 162 Old 10-09-2017, 10:56 AM - Thread Starter
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Quote:
Originally Posted by T( )( )L View Post
fL : ) well that fooled me,i do belive you could get better balance in 2 point then you dont need to touch 20p so much,check post #37 thats only done with 2p.
Did your set have that crossover effect at 70% where Green went from being high to low?

That's what's making it hard for 2pt to get it any closer because if I drop Green to address the over expression below 70% it drives it even further lower above 70% causing more of discrepancy

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post #62 of 162 Old 10-09-2017, 11:18 AM
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They are interacting with eachother as well,experiment moore : )
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post #63 of 162 Old 10-09-2017, 12:37 PM - Thread Starter
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They are interacting with eachother as well,experiment moore : )
I'm going to. I was a little rushed due to football starting yesterday.



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post #64 of 162 Old 10-16-2017, 10:37 AM
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Well, not owning an LG OLED yet, but will real soon. I've been doing some calibration in my time, on my Epson PJ, Pana plasma and so on. But HDR is another ballgame.

I read that a 2 pt grayscale calibration is recommended, and mentionings of this in the service menu. Is this also true for a 2017 display? Do I need to get into the service menu at all with a 65B7V? (Only for ABSL turn-off maybe).
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post #65 of 162 Old 10-16-2017, 12:10 PM
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Originally Posted by Barsk View Post
Well, not owning an LG OLED yet, but will real soon. I've been doing some calibration in my time, on my Epson PJ, Pana plasma and so on. But HDR is another ballgame.

I read that a 2 pt grayscale calibration is recommended, and mentionings of this in the service menu. Is this also true for a 2017 display? Do I need to get into the service menu at all with a 65B7V? (Only for ABSL turn-off maybe).
I have the 2016 model, but from what I've read, the 2017 LG OLEDs have a 2pt white balance for HDR in the regular menu so you should be fine.
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post #66 of 162 Old 10-16-2017, 12:55 PM
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Originally Posted by Barsk View Post
Well, not owning an LG OLED yet, but will real soon. I've been doing some calibration in my time, on my Epson PJ, Pana plasma and so on. But HDR is another ballgame.

I read that a 2 pt grayscale calibration is recommended, and mentionings of this in the service menu. Is this also true for a 2017 display? Do I need to get into the service menu at all with a 65B7V? (Only for ABSL turn-off maybe).
Hi, it's recommended because it's easier for those not familiar with problems which calibration controls can introduce.

If you have time to do more parametric 20-Point adjustments, you will have better results with combination of 2-Point calibration, but you need much more time to verify with real content (except measurements), because large adjustments of calibration controls can introduce problems to real content (while charts will be great). Each calibration control has it's own safe adjustments +- range of values which will not introduce problems viewing real content.

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post #67 of 162 Old 10-17-2017, 12:57 AM
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Originally Posted by ConnecTEDDD View Post
Hi, it's recommended because it's easier for those not familiar with problems which calibration controls can introduce. If you have time to do more parametric 20-Point adjustments, you will have better results with combination of 2-Point calibration
Ok, I'll look into this when my set arrives. I't a bit worrying though that you reference viewing real content to find error the charts are not showing. That will introduce subjectivity to the outcome and this is exactly why (IMHO) we use calibration tools and not eyeball it. If the outcome is not great then there is something wrong - or incomplete in what and how we measure. Maybe the whole methodology for calibration needs to be updated then. Well, that is fuel for another thread I think.
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post #68 of 162 Old 10-17-2017, 01:07 AM
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Originally Posted by Barsk View Post
Ok, I'll look into this when my set arrives. I't a bit worrying though that you reference viewing real content to find error the charts are not showing. That will introduce subjectivity to the outcome and this is exactly why (IMHO) we use calibration tools and not eyeball it. If the outcome is not great then there is something wrong - or incomplete in what and how we measure. Maybe the whole methodology for calibration needs to be updated then. Well, that is fuel for another thread I think.
It's a problem of LG calibration control design, they can introduce posterization and banding artifacts, you can check grayscale/color ramps to see if you notice any problem and check various scenes with skintones to see if there problem with skin-shades which is the more noticed problem. There is an un-alighment of calibration controls so the pattern you will use to fix specific digital level will not align with the adjustment the display is applying to that labeled digital level.

You can spot a problem if you take 100-point grayscale measurement run for example but with 20-point is difficult.

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post #69 of 162 Old 10-17-2017, 01:14 AM
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Originally Posted by ConnecTEDDD View Post
It's a problem of LG calibration control design, they can introduce posterization and banding artifacts ...
Ah, that's what you ment. Got it!
The fact that controls are not aligned with digital values is a real PITA. I have that in my Epson PJ when adjusting gamma. Any hope that can be remedied in a firmware release in the future?
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post #70 of 162 Old 10-17-2017, 01:18 AM
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Ah, that's what you ment. Got it!
The fact that controls are not aligned with digital values is a real PITA. I have that in my Epson PJ when adjusting gamma. Any hope that can be remedied in a firmware release in the future?
This issue of LG's can be fixed if they change engineers or if they spend some more money to include a better calibration control processing circuit.
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post #71 of 162 Old 10-17-2017, 04:08 AM
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Has anyone tested if 2016 HDR adjustment code values align with patterns when using a different content metadata? We know they are not aligning with 1000 nit (R.Masciola’s HDR-10 UHD Test Patterns Suite) but how about 540 or 4000 nit. People with a test pattern generator should check it out.

https://media.flixcar.com/f360cdn/LG...G_OLED_TVs.pdf
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LG OLED 55B6V, Finnsat FST03PVR, Toshiba 1T HDD, Genelec 6010B, BK XLS200-DF MK2
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post #72 of 162 Old 10-17-2017, 07:41 AM - Thread Starter
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Quote:
Originally Posted by ConnecTEDDD View Post
...
Ted, mind giving your thoughts on this issue I've trouble solved in Masciolas thread:

Quote:
For some reason if I use the Black Clipping pattern the near black bars (1% up to 8%) show up as solid colors (Red, Green, Blue). What's weird is near black window patterns all appear normal except 3% black is tinted dark red. I can also see faint colored near black lines playing the grayscale ramp pattern on the Xbox as well.

If I play your HDR patterns off my USB stick directly from my LG TV using the same picture settings these colored near black issues don't show up. Trying to narrow it down to a possible encoding issue or something weird in how the Xbox handles near black.

UPDATE:
Just hooked the Xbox directly to the LG and reset all picture settings (including my service menu adjustments). Was still getting the colored near black issue though I noticed it was lesser on HDR Bright and even lesser on HDR Vivid. Besides Color Temp the big difference between the three HDR modes is the Color setting (Standard is 55, Bright is 60, Vivid is 70).

So I set the LG to HDR Standard and played with the Color setting. Going above 55 does nothing. But as soon as I went from 50 to 49 there was an immediate change to near black: all the bars that were colored switched to normal gray shades. And the pattern itself actually got slightly brighter (more near black detail). It was literally like breaking a wall. Absolutely no change from 55 down to 50. But as soon as I hit 49 everything looked normal.

It still seems like this is strictly an issue with my Xbox One S as playing your patterns off USB on my LG has none of these issues. Going to redo my calibration with Color of 49 and see what happens. Maybe when my Xbox One X arrives it won't have this issue.
Summary:
- with Xbox One S hooked directly to my LG near black clipping patterns (and 3% near black IRE) have obvious color tint issues even with all picture settings on default
- tried all possible Xbox One S setting combinations but nothing fixed it
- playing the same patterns directly off the LG via USB using the same settings does not have this issue
- I found that adjusting Color to 49 for HDR Standard fixes the color shift issue when playing back on the Xbox
- Masciola tried to replicate this issue on his own Xbox One S but black clipping patterns displayed normally for him

I'm chalking this up to a fluke with my specific Xbox playback (hardware issue I'd assume) and hoping the Xbox One X I have ordered will fix it.

In the mean time I'm going to redo my HDR Standard calibration using Color of 49 and see if I can alleviate any negative affects this will have on Color calibration.

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post #73 of 162 Old 10-18-2017, 01:13 AM
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Quote:
Originally Posted by BigCoolJesus View Post
Ted, mind giving your thoughts on this issue I've trouble solved in Masciolas thread:



Summary:
- with Xbox One S hooked directly to my LG near black clipping patterns (and 3% near black IRE) have obvious color tint issues even with all picture settings on default
- tried all possible Xbox One S setting combinations but nothing fixed it
- playing the same patterns directly off the LG via USB using the same settings does not have this issue
- I found that adjusting Color to 49 for HDR Standard fixes the color shift issue when playing back on the Xbox
- Masciola tried to replicate this issue on his own Xbox One S but black clipping patterns displayed normally for him

I'm chalking this up to a fluke with my specific Xbox playback (hardware issue I'd assume) and hoping the Xbox One X I have ordered will fix it.

In the mean time I'm going to redo my HDR Standard calibration using Color of 49 and see if I can alleviate any negative affects this will have on Color calibration.

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Absolutely do not use an Xbox One for anything calibration related. I can't speak to how it handles HDR specifically, but with SDR it very famously crushes near black detail. This is intentional with the rationale being it adds "pop" to the image. Xbox 360 also used a nonstandard gamma to the same effect.
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post #74 of 162 Old 10-18-2017, 03:33 AM - Thread Starter
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Absolutely do not use an Xbox One for anything calibration related. I can't speak to how it handles HDR specifically, but with SDR it very famously crushes near black detail. This is intentional with the rationale being it adds "pop" to the image. Xbox 360 also used a nonstandard gamma to the same effect.
That's not true in my case. I put in Masciolas SDR calibration disc last weekend and near black detail is exactly the same as when I calibrated it with my Oppo player.

I also have meter reads showing SDR gamma tracks nearly the same as the Oppo and as my Laptop (which I use to do calibrations for SDR with CalMAN).

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post #75 of 162 Old 10-18-2017, 09:29 AM
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IMHO you do not need to touch the 20pt controls for HDR10 calibration on the 2016 and 2017 LG OLEDs. for the 2016 you should calibrate the 2pt in the service menu, and the 2017 you just need to calibrate the 2pt controls in the user menu.

LG themselves have said they don't intended the TV to follow ST.2084 exactly, as their PQ team has designed the HDR10 behavior on the 2017 TVs to visually match the Sony BVM-X300. The fact that the LG most closely matched the X300 at both the US and UK TV shootouts seems to prove them right. I calibrated the LGs at both shootouts, and I did not touch the 20pt controls.
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post #76 of 162 Old 10-18-2017, 09:35 AM - Thread Starter
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IMHO you do not need to touch the 20pt controls for HDR10 calibration on the 2016 and 2017 LG OLEDs. for the 2016 you should calibrate the 2pt in the service menu, and the 2017 you just need to calibrate the 2pt controls in the user menu.

LG themselves have said they don't intended the TV to follow ST.2084 exactly, as their PQ team has designed the HDR10 behavior on the 2017 TVs to visually match the Sony BVM-X300. The fact that the LG most closely matched the X300 at both the US and UK TV shootouts seems to prove them right. I calibrated the LGs at both shootouts, and I did not touch the 20pt controls.
If using a grayscale ramp to make sure adjustments to the 20pt controls are not introducing visible color shift issues, is it OK to use them in small increments to fine tune the grayscale?

As evidenced by my readings, Green does a complete shift from being too high before 70% then dropping too low after 70% so the only way to get smooth RGB tracking is to decrease Green for the 20pt controls slightly.

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post #77 of 162 Old 11-22-2017, 07:19 AM
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Hi Jamesb23,

Select SMPTE 2084 HDR for "Gamma calculation" and UHDTV-Rec2020 for the "Color Space" standard option. Regarding the LG's code specific grayscale patterns, you can enter the 8-bit values(shown below) within the user.csv file in the HCFR program directory. Reference HERE and HERE. Thanks!

Here is the 10-bit to 8-bit reference of the LG OLED code specific patterns:

1. 127/32.....7.2%
2. 254/64.....21.7%
3. 320/80.....29.2%
4. 386/97.....36.8%
5. 419/105.....40.5%
6. 451/113.....44.2%
7. 467/117.....46.0%
8. 482/121.....47.7%
9. 498/125.....49.5%
10. 513/128.....51.3%
11. 529/132.....53.1%
12. 544/136.....54.8%
13. 560/140.....56.6%
14. 575/144.....58.3%
15. 591/148.....60.2%
16. 606/152.....61.9%
17. 622/156.....63.7%
18. 637/159.....65.4%
19. 653/163.....67.2%
20. 668/167.....68.9%

- Ryan M.
Are these numbers identical for the LG C7?
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post #78 of 162 Old 11-22-2017, 09:47 AM
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Are these numbers identical for the LG C7?
Hi EricNL,

They are not. LG created an entirely new set of code based values for the 2017 models. The 2016 values vs 2017 values. Thanks!

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post #79 of 162 Old 11-24-2017, 03:33 AM
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Hi EricNL,

They are not. LG created an entirely new set of code based values for the 2017 models. The 2016 values vs 2017 values. Thanks!

- Ryan M.
I'm not familiar with how this usercolors file should be made based on the codes supplied by LG. Got a link to point me in the right direction?
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post #80 of 162 Old 11-24-2017, 05:10 PM
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Sorry for cross posting but I realize that I should have posted in this thread to begin with...
I have a LG OLED55B6P TV, a LG UP970 UHD player, and Xbox One X.
In the following youtube video the Xbox One X is compared to separate UHD players:

At around the 4:30 mark Vincent mentions that the XB1X has some color correction errors visible when playing the color decoding chart on R. Mascior's UHD test disc.
When I tried the same pattern on my LG UP970 I saw the same 'errors' on my TV as on the XB1X as well.
I then tried the HDR test files from a USB drive, assuming this should show only the TVs decoder accuracy.
But - the same decoding 'errors' were visible.

So is the 55B6P decoder wrong here?
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post #81 of 162 Old 11-24-2017, 07:19 PM
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I'm not familiar with how this usercolors file should be made based on the codes supplied by LG. Got a link to point me in the right direction?
Hi EricNL,

The "user.csv file" is a way to import the LG code based values into HCFR as a user defined option. However, the LG code based values are represented in 10-bit and HCFR works within 8, so I simply just provided the 8-bit value for each corresponding percentage. Here are the 2017 Full Range Code Values in 10/8-bit for 540 nit/1,000 nit/4,000 nit. Thanks!

540 nit

01. 0/0................0.0%
02. 240/60.........23.5%
03. 314/78.........30.7%
04. 388/97.........37.9%
05. 419/104.......41.0%
06. 453/113.......44.3%
07. 468/116.......45.7%
08. 481/120.......47.0%
09. 498/124.......48.7%
10. 515/128.......50.3%
11. 529/132.......51.7%
12. 545/136.......53.3%
13. 561/140.......54.8%
14. 575/143.......56.2%
15. 591/147.......57.8%
16. 608/152.......59.4%
17. 623/155.......60.9%
18. 637/159.......62.3%
19. 653/163.......63.8%
20. 669/167.......65.4%
21. 1023/255....100.0%

1,000 nit

01. 0/0................0.0%
02. 277/69.........27.1%
03. 345/86.........33.7%
04. 412/103.......40.3%
05. 446/111.......43.6%
06. 480/120.......46.9%
07. 498/124.......48.7%
08. 513/128.......50.1%
09. 530/132.......51.8%
10. 544/136.......53.2%
11. 561/140.......54.8%
12. 574/143.......56.1%
13. 589/147.......57.6%
14. 604/151.......59.0%
15. 617/154.......60.3%
16. 632/158.......61.8%
17. 647/161.......63.2%
18. 663/165.......64.8%
19. 678/169.......66.3%
20. 693/173.......67.7%
21. 1023/255....100.0%

4,000nit

01. 0/0................0.0%
02. 299/74.........29.2%
03. 372/93.........36.4%
04. 443/110.......43.3%
05. 480/120.......46.9%
06. 512/127.......50.0%
07. 528/131.......51.6%
08. 545/136.......53.3%
09. 562/140.......54.9%
10. 576/144.......56.3%
11. 594/148.......58.1%
12. 608/151.......59.4%
13. 625/156.......61.1%
14. 640/160.......62.6%
15. 658/164.......64.3%
16. 673/168.......65.8%
17. 690/172.......67.4%
18. 704/176.......68.8%
19. 718/179.......70.2%
20. 749/187.......73.2%
21. 1023/255....100.0%


- Ryan M.

Last edited by mascior; 11-24-2017 at 09:23 PM.
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post #82 of 162 Old 11-25-2017, 05:34 AM
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Quote:
Originally Posted by nusihb View Post
Sorry for cross posting but I realize that I should have posted in this thread to begin with...
I have a LG OLED55B6P TV, a LG UP970 UHD player, and Xbox One X.
In the following youtube video the Xbox One X is compared to separate UHD players:
https://youtu.be/F1Lt43-9lmY

At around the 4:30 mark Vincent mentions that the XB1X has some color correction errors visible when playing the color decoding chart on R. Mascior's UHD test disc.
When I tried the same pattern on my LG UP970 I saw the same 'errors' on my TV as on the XB1X as well.
I then tried the HDR test files from a USB drive, assuming this should show only the TVs decoder accuracy.
But - the same decoding 'errors' were visible.

So is the 55B6P decoder wrong here?
Hi nusihb,

There shouldn't be anything wrong with your 55B6 decoder, per se. The color decoding pattern has "0" representing 1,000 nit and with the color filter applied, each independent color at "0" (Red, Green, & Blue Match) should blend completely into the background representing proper color decoding. However, since OLED displays can not achieve 1,000 nit, you are most likely seeing artifacts of the applied tone mapping and not necessarily improper color decoding. I will be offering a new 50% color decoding pattern in my next revision. Thanks!

- Ryan M.
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post #83 of 162 Old 11-25-2017, 10:22 AM
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Originally Posted by mascior View Post
Hi nusihb,

There shouldn't be anything wrong with your 55B6 decoder, per se. The color decoding pattern has "0" representing 1,000 nit and with the color filter applied, each independent color at "0" (Red, Green, & Blue Match) should blend completely into the background representing proper color decoding. However, since OLED displays can not achieve 1,000 nit, you are most likely seeing artifacts of the applied tone mapping and not necessarily improper color decoding. I will be offering a new 50% color decoding pattern in my next revision. Thanks!

- Ryan M.
Thanks!
I assume this is the reason Vincent used Samsung LCD TVs to show this error on the XB1X... it wouldn't have been visible on a LG OLED TV.
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post #84 of 162 Old 12-01-2017, 10:01 PM
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Originally Posted by WiFi-Spy View Post
IMHO you do not need to touch the 20pt controls for HDR10 calibration on the 2016 and 2017 LG OLEDs. for the 2016 you should calibrate the 2pt in the service menu, and the 2017 you just need to calibrate the 2pt controls in the user menu.
Tyler,
Thank you for this advice.

Should I be using 2 points from the LG 2016 HDR10 R. Masciola patterns, e.g. code 254 and code 637? Sort of the equivalent to 30 & 80 in SDR calibration.


LG HDR10 Codes R. Masciola
1. 127/32.....7.2%
2. 254/64.....21.7%
3. 320/80.....29.2%
4. 386/97.....36.8%
5. 419/105.....40.5%
6. 451/113.....44.2%
7. 467/117.....46.0%
8. 482/121.....47.7%
9. 498/125.....49.5%
10. 513/128.....51.3%
11. 529/132.....53.1%
12. 544/136.....54.8%
13. 560/140.....56.6%
14. 575/144.....58.3%
15. 591/148.....60.2%
16. 606/152.....61.9%
17. 622/156.....63.7%
18. 637/159.....65.4%
19. 653/163.....67.2%
20. 668/167.....68.9%
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post #85 of 162 Old 12-01-2017, 11:04 PM
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Originally Posted by T( )( )L View Post
I run 0-100 5% steps,there probably will be a red bump at 65-70 but continue to lower red and it will go away,you shouldnt need to do finetuning in 20p over CV 575.
T(),

Thank you for all your advice in this thread, very useful. I’m going to try this 2-point approach on my 2016 LG E6.

I just wanted to clarify what you meant in this post?

When I am looking at the WB Balance setting in the service menu, you are saying run 0-100 5% step slides, measuring at each step and adjusting the R B G Gain in the service menu. I.E. get the best balance between the 20 slide measurements on the Gain control.

Then use the 20 point controls with the R.Masciola HDR10 slides to fine tune up to CV 575.
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post #86 of 162 Old 12-02-2017, 02:41 AM
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Thanks

If you look at post #37 you see my 2 point white balance in the service menu performed “rgb balance without luminance”(we cant control the rgb balance with luminance due to lg’s choice of tonemapping) so the only thing to do is to get as good rgb balance as we can,as you can see i still have balance error (green bump and a blue dip) those cant be fixed within the 2 point white balance,so i had to go into the 20 point control in the normal white balance menu and lower green and boosting blue at affected ire’s,but be careful when using 20p its very easy to get the greyramp look like a rainbow if you only go by the meter reading,best way i belive is to eyeballing in the last finetuning using the greyramp (and look at the areas where the problem is,kind of where i had the green peak and blue dip)

After each adjustment i run a full sweep 0-100 5% increasment (i have tried 256 point sweeps but i get a strange slope of the curve doing so,guess its image retension spooking things up) some code values has a broadband affecting nearby ire’s and some has very narrow band so its good to run full sweeps after each adjustment.

All sets are different so dont get hung up on a specific code value,give the 2p white balance in the service menu a good job and you shouldnt need (if any) to do a 20p touch up,and also use a good disc (i use Sully as refrerens disc for skintones etc)

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post #87 of 162 Old 12-02-2017, 06:30 AM
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Thanks

If you look at post #37 you see my 2 point white balance in the service menu performed “rgb balance without luminance”(we cant control the rgb balance with luminance due to lg’s choice of tonemapping) so the only thing to do is to get as good rgb balance as we can,as you can see i still have balance error (green bump and a blue dip) those cant be fixed within the 2 point white balance,so i had to go into the 20 point control in the normal white balance menu and lower green and boosting blue at affected ire’s,but be careful when using 20p its very easy to get the greyramp look like a rainbow if you only go by the meter reading,best way i belive is to eyeballing in the last finetuning using the greyramp (and look at the areas where the problem is,kind of where i had the green peak and blue dip)

After each adjustment i run a full sweep 0-100 5% increasment (i have tried 256 point sweeps but i get a strange slope of the curve doing so,guess its image retension spooking things up) some code values has a broadband affecting nearby ire’s and some has very narrow band so its good to run full sweeps after each adjustment.

All sets are different so dont get hung up on a specific code value,give the 2p white balance in the service menu a good job and you shouldnt need (if any) to do a 20p touch up,and also use a good disc (i use Sully as refrerens disc for skintones etc)
Thank you. I’ve also been reading the older LG 2016 calibration thread, where you also make a lot of good points.

I now need to get my copy of CalMan upgraded, as I only have the basic, which doesn’t have HDR10.

Last edited by Nick Laslett; 12-02-2017 at 09:46 AM.
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post #88 of 162 Old 12-04-2017, 08:31 AM
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Thanks

If you look at post #37 you see my 2 point white balance in the service menu performed “rgb balance without luminance”(we cant control the rgb balance with luminance due to lg’s choice of tonemapping) so the only thing to do is to get as good rgb balance as we can,as you can see i still have balance error (green bump and a blue dip) those cant be fixed within the 2 point white balance,so i had to go into the 20 point control in the normal white balance menu and lower green and boosting blue at affected ire’s,but be careful when using 20p its very easy to get the greyramp look like a rainbow if you only go by the meter reading,best way i belive is to eyeballing in the last finetuning using the greyramp (and look at the areas where the problem is,kind of where i had the green peak and blue dip)

After each adjustment i run a full sweep 0-100 5% increasment (i have tried 256 point sweeps but i get a strange slope of the curve doing so,guess its image retension spooking things up) some code values has a broadband affecting nearby ire’s and some has very narrow band so its good to run full sweeps after each adjustment.

All sets are different so dont get hung up on a specific code value,give the 2p white balance in the service menu a good job and you shouldnt need (if any) to do a 20p touch up,and also use a good disc (i use Sully as refrerens disc for skintones etc)
I've been calibrating my 2016 C6 using Masciola's patterns and the medium setting for 2pt in the service menu. Adjusting the gain has allowed me to get nearly perfect RGB balance from 50-100 IRE. On the other hand, 5-45 has been really tough when adjusting the cuts. If I balanced 5, then 10-45 would show the green bump along with dips in both blue and red. But if you adjust it the other way, when you check near black (3% IRE or 4%) you can clearly see a red tint.

The only way to fix this is with the 20pt controls? I thought it would be possible to do this just with 2pt in service menu?
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post #89 of 162 Old 12-04-2017, 08:53 AM
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Finetuning the bumps/dips is with 20p controls with an eye on the greyramp

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post #90 of 162 Old 12-04-2017, 09:08 AM
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Finetuning the bumps/dips is with 20p controls with an eye on the greyramp
Any advice on how you went about doing it, which steps in which order? I'm using HCFR and an iDisplay Pro, no Calman for me. From what I understand the LG code values are all out of whack, and we should never touch 127. I would assume though that since my problem is from 5-45 IRE, that should correspond to something like code values 254 through 513?
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