HCFR - Open source projector and display calibration software - Page 374 - AVS Forum | Home Theater Discussions And Reviews
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post #11191 of 12072 Old 12-20-2018, 03:34 PM
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I recently picked up an i1 Display Pro and over the past few days figured out how to get an SDR calibration I'm pretty happy with, and now I want to move on to HDR-10. So I have some newbie questions about workflow. I've seen similar questions in the past few pages, but since I barely know what I'm doing here, I can't really tell if the solutions given would also apply to me. My display is a TCL R615, and I have R.Masciola's HDR-10 test patterns on a thumb drive plugged into an LG UP870 4K Blu Ray player. The display has an 11 point white balance control, and RGB values for primary and secondary color space controls.

I'm mostly unclear on what my HCFR preferences should be. Should my color space be set to Rec2020 or Rec2020/P3? I know EOTF needs to be set to 2084, but do I leave the Master and Content MaxL settings at their defaults? Or do I set them to 1000, since that's what the test patterns use? Do I need to worry about overriding targets? I'm not even sure what that does. And I've seen people talk about setting their color difference formula to CIE2000 so they can change their grayscale dE handling, but I'm not sure why. Can I just leave it on recommended?

Which measurements should I be doing other than the 11 point grayscale? Just go through the entire HCFR workflow folder one by one? And since this is my first time not using HCFR's built in pattern generator, how do I tell it exactly what I'm measuring?

Sorry about the flood of questions, I really just don't know what I'm doing yet.
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post #11192 of 12072 Old 12-20-2018, 06:55 PM
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What "Display Type" is recommended for a Vizio E-Series using a ColorMunki Display colorimeter?
I've been using "Non-refresh" to this point, is that correct?


Thanks,
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post #11193 of 12072 Old 12-20-2018, 07:34 PM
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Quote:
Originally Posted by mondayyyyy View Post
I'm mostly unclear on what my HCFR preferences should be. Should my color space be set to Rec2020 or Rec2020/P3?
You can just measure your TV in Rec2020 and see how close the primary colours are to their respective targets. If they cannot reach the targets (EDIT: most likely they can't), then it would be better to use Rec020/P3 instead.

Quote:
I know EOTF needs to be set to 2084, but do I leave the Master and Content MaxL settings at their defaults? Or do I set them to 1000, since that's what the test patterns use? Do I need to worry about overriding targets? I'm not even sure what that does.
Again, you can first measure the greyscale using the default settings. The 100% level should automatically be taken as Target MaxL, if not, override that with the measured value. Master MaxL depends on the contents you're watching; typically they are 1000 or 4000. If your TV allows more than one calibration, calibrate for both. If not, you have to choose one or the other.

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And I've seen people talk about setting their color difference formula to CIE2000 so they can change their grayscale dE handling, but I'm not sure why. Can I just leave it on recommended?
There is no need to change colour difference formula. For greyscale, you can turn on "w/gamma" but that's optional. The easiest way is to right-click on the RGB graph and select that option. You should be using "without gamma" when adjusting 2-pt.

Quote:
Which measurements should I be doing other than the 11 point grayscale? Just go through the entire HCFR workflow folder one by one? And since this is my first time not using HCFR's built in pattern generator, how do I tell it exactly what I'm measuring?
You can still use the internal patterns if your TV allows you to turn on HDR manually. If not, you will have to "synchronize" HCFR with the patterns displayed by the blu-ray player.
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Last edited by Dominic Chan; 12-23-2018 at 09:28 AM.
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post #11194 of 12072 Old 12-21-2018, 04:33 AM
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Quote:
Originally Posted by Dominic Chan View Post

There is no need to change colour difference formula. For greyscale, you can turn on "w/gamma" but that's optional. The easiest way is to right-click on the RGB graph and select that option. You should be using "without gamma" when adjusting 2-pt.

When using 2 pt for coarse adjustment and follow it with 11 point, should we switch the with and w/o gamma as appropriate or is it okay to do w/gamma for both runs (2pt and 11 pt)?
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post #11195 of 12072 Old 12-21-2018, 05:13 AM
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Originally Posted by aaranddeeman View Post
When using 2 pt for coarse adjustment and follow it with 11 point, should we switch the with and w/o gamma as appropriate or is it okay to do w/gamma for both runs (2pt and 11 pt)?
You can leave w/gamma on; just keep in mind that for 2-pt the objective is to just make r=g=b, they may not be all 100%.
However, switching the setting now involves only a simple right-click, so I normally do the switch as appropriate. With older versions of HCFR many steps were involved.

Last edited by Dominic Chan; 12-21-2018 at 06:19 AM.
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post #11196 of 12072 Old 12-21-2018, 10:41 AM
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Does anybody know if the current version of HCFR works with the OEM version of i1 Pro 2 spectro? Will I need special drivers for HCFR to see the meter or will the software communicate with it out of the box (like it does with my i1 Display Pro)?

Thank you,
Ales

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post #11197 of 12072 Old 12-21-2018, 11:47 AM
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Quote:
Originally Posted by afilipi View Post
Does anybody know if the current version of HCFR works with the OEM version of i1 Pro 2 spectro? Will I need special drivers for HCFR to see the meter or will the software communicate with it out of the box (like it does with my i1 Display Pro)?

Thank you,
Ales
The spectro does need the ArgyllCMS driver. It does not discriminate against OEM.
EDIT: See also post 11199 by gwgill.

Last edited by Dominic Chan; 12-23-2018 at 08:27 AM.
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post #11198 of 12072 Old 12-22-2018, 10:25 PM
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Originally Posted by Dominic Chan View Post
You can just measure your TV in Rec2020 and see how close the primary colours are to their respective targets. If they cannot reach the targets, then it would be better to use Rec020/P3 instead.
This was all very helpful, thanks. I did run into a few issues though. When working on the white balance, none of my adjustments on 70% and up had any effect, even though 70% was only around 550 nits IIRC and the display maxed out at around 960. Is that normal? Possibly just a flaw in my TV's CMS controls?

Also, the primary triplets that HCFR assumes are different from R.Masciola's. I had to use Rec2020/BT709 in order to come anywhere close. Was I doing something wrong?
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post #11199 of 12072 Old 12-23-2018, 05:40 AM
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Quote:
Originally Posted by afilipi View Post
Does anybody know if the current version of HCFR works with the OEM version of i1 Pro 2 spectro?
Some of the OEM i1Pro2 spectro's are missing the normal version 2 features, and need a more recent version of ArgyllCMS to function. Last time this subject came up, HCFR hadn't been updated to the latest ArgyllCMS code.

Author of ArgyllCMS and ArgyllPRO ColorMeter
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post #11200 of 12072 Old 12-23-2018, 12:08 PM
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Originally Posted by Dominic Chan View Post
I'm not sure why the assumed values would be significantly different. For Green (as an example), HCFR 2020/P3 uses 90,127,74 (x=0.2650, y=0.6884) and 2020/Rec709 uses 73,94,50 (0.3028, 0.5971) which look right to me. What does the disc pattern use for the primary colours?
For P3 the test pattern has 93.125.55 (that's in 16-235, I believe) for 50% amplitude 100% saturation. But HCFR is telling me P3 reference is 84.120.42.
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post #11201 of 12072 Old 12-23-2018, 01:01 PM
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Quote:
Originally Posted by mondayyyyy View Post
For P3 the test pattern has 93.125.55 (that's in 16-235, I believe) for 50% amplitude 100% saturation. But HCFR is telling me P3 reference is 84.120.42.
Hi mondayyyyy,

The correct triplet values for BT2020/P3 green 50% amplitude/100% saturation is 93,125,55. The reference values within the "Selected Color" window never really align. However, if you open up the internal HCFR TPG and select your color, it will display the correct triplet values. In this case 93,125,55. I hope this helps. Thanks!

- Ryan M.
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post #11202 of 12072 Old 12-26-2018, 12:35 PM
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Originally Posted by mascior View Post
Hi mondayyyyy,

The correct triplet values for BT2020/P3 green 50% amplitude/100% saturation is 93,125,55. The reference values within the "Selected Color" window never really align. However, if you open up the internal HCFR TPG and select your color, it will display the correct triplet values. In this case 93,125,55. I hope this helps. Thanks!

- Ryan M.
This did help, thanks. Along with lowering the display's "color" setting a couple notches, I was able to get a lot closer to the P3 values than before. Hopefully I can get around to uploading a CHC file soon so you guys can let me know if I did a decent job or not.
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post #11203 of 12072 Old 12-27-2018, 06:53 AM
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Another question. I have a PC that I use exclusively for SDR content (mostly blu-rays and games). Since the display is now calibrated for P3, should I run the X-Rite software to set a Windows calibration for 100 cd/m2? Or just leave it as is? I tried it and it's dimmer, but also shifted towards cyan.
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post #11204 of 12072 Old 12-29-2018, 07:22 AM
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Hi, been a while since I used HCFR - I have an i1D3, but when under 'use existing meter correction file', the drop down is blank, there is nothing there. The correction files are there in Users>User>AppData>Roaming>Color. How do I get HCFR to see these? Thanks.

NVM - I guess I just choose the correct display type on the next page?

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post #11205 of 12072 Old 12-30-2018, 04:38 AM
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I'd like to calibrate a Samsung UE43NU7400 with an i1Display Pro but I don't know which display type I should choose. For my computer monitors I used the DisplaySpecifications website where it listed "W-LED". But for the TV it only lists "Edge-LED" as backlight type (see https://www.displayspecifications.com/en/model/5a1f125f) and that doesn't match any type in HCFR.
The TV should have a wide color gamut (called "Dynamic Crystal Colour" by Samsung). What's also complicating the matter is that it seems like Samsung ships this TV with both a VA and an IPS panel.

Anyone an idea which display type would be the correct one?


edit: In case anyone has the same question, it seems like the "RG Phosphor" display type is the correct one.

Last edited by cremor; 01-06-2019 at 02:36 AM.
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post #11206 of 12072 Old 12-30-2018, 06:59 AM
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Hi, I'm sure I'm doing something wrong, but I'm trying to do a simple 2pt correction for hdr, but when I put madtpg into hdr and fullscreen, as soon as i start the measures hcfr kicks it back to SDR. How do I keep madtpg in HDR mode? Thanks!
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post #11207 of 12072 Old 12-30-2018, 07:17 AM
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I did my first calibration yesterday using an XRite I1 Display Pro, and HCFR. The monitor is a Dell U3011 (30" Wide gamut CCFL) i bought last week.
There must be much more to it then i've done, and i'm sure many tweaking and tuning can be done, but i'm pretty happy with the initial result.

There is one thing however i don't understand; gamma should be 2.2, and i would expect some deviation, but if i look at the gamma graph, this looks very weird? I would expect a more straight line? Did i do something wrong? See attached pdf.
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post #11208 of 12072 Old 01-03-2019, 03:52 AM
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Quote:
Originally Posted by afilipi View Post
Does anybody know if the current version of HCFR works with the OEM version of i1 Pro 2 spectro? Will I need special drivers for HCFR to see the meter or will the software communicate with it out of the box (like it does with my i1 Display Pro)?

Thank you,
Ales
Hi Ales, if you have a normal OEM i1PRO2 from X-Rite you will have no problem.



There is a problem with some feature locked OEM (called UVcut Filter (M2), or branded OEM Xerox i1PRO2 UV Cut.

BTW something important when you buy a used i1PRO2 is when it's been manufactured, there is a month/year marking to the i1PRO2 sticker with serial number. (March 2013 was manufactured the i1PRO2 of the picture above)

Even brand new EFI/NEC, its meters that has been some years before, so any stock available are old stock of meters.

So the meter will out of certification period, see there more info.

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
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post #11209 of 12072 Old 01-03-2019, 03:55 AM
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Originally Posted by jowicrt View Post
I did my first calibration yesterday using an XRite I1 Display Pro, and HCFR. The monitor is a Dell U3011 (30" Wide gamut CCFL) i bought last week.
There must be much more to it then i've done, and i'm sure many tweaking and tuning can be done, but i'm pretty happy with the initial result.

There is one thing however i don't understand; gamma should be 2.2, and i would expect some deviation, but if i look at the gamma graph, this looks very weird? I would expect a more straight line? Did i do something wrong? See attached pdf.
Hi, about your posted measurements with HCFR, configure the software to include gamma errors to the reported dE numbers, from HCFR Preferences -> Advanced -> change the Grayscale handling to ''Absolute Y w/gamma'', to include to the dE calculation the gamma errors also. (Color Difference Formula from Recommend to CIE2000)

While you will fix RGB balance errors, look at each % Grey data the meter reports, there is a Y (which shows to you the measured luminance) and the Y target (which show the target luminance), and re-adjust your settings to fix gamma errors also, for that reason you don't see a straight gamma chart line because your gamma is not accurately calibrated.
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post #11210 of 12072 Old 01-03-2019, 04:00 AM
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Originally Posted by mondayyyyy View Post
Another question. I have a PC that I use exclusively for SDR content (mostly blu-rays and games). Since the display is now calibrated for P3, should I run the X-Rite software to set a Windows calibration for 100 cd/m2? Or just leave it as is? I tried it and it's dimmer, but also shifted towards cyan.
Hi, you will need a REC.709 calibration with gamma 2.4 and 100 nits for SDR content. What display do you have? Use a different picture mode and perform an SDR calibration there, its better to use your display controls (if you have 10/20-Point RGB balance controls and full CMS, than X-Rite software.

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post #11211 of 12072 Old 01-03-2019, 04:13 AM
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Originally Posted by mondayyyyy View Post
I'm mostly unclear on what my HCFR preferences should be. Should my color space be set to Rec2020 or Rec2020/P3?
When you calibrate for SDR, you will use REC.709 as colorspace target, while when you calibrate for HDR10 you should select REC.2020 as colorspace target.

DCI-P3 is not a consumer colorspace, so you should not aim for that colorspace when you calibrating any consumer device.

REC.2020 is the only colorspace you have to aim for HDR10 calibration, because displays can't cover that colorspace completely, we are using lower Saturation level (50%) and lower Stimulus Level (50%) patterns.

REC.2020 is being used as container, most of current UHD movies has been mastered using DCI-P3 primaries with REC.2020 D65 White Point calibrated mastering monitors, so colors beyond that gamut coverage are not being used (currently) to most of the movies.

Because most of the consumer HDR displays are not covering 100% the DCI-P3 primaries (inside REC.2020 container), this is why we are using REC.2020 with 50% Saturation patterns for HDR CMS, because xy of 50% Saturation REC.2020 is undersaturated from 100% Saturation of DCI Primaries (inside REC.2020 container), so it's a target that you can reach when the CMS controls of the display are working as expected.

You can use DCI-P3 Saturation tracking inside a REC.2020 container (REC.2020/P3 selection) to evaluate the display tracking of DCI-P3 inside REC.2020 (where previously have calibrated the display with REC.2020 as target colorspace).
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post #11212 of 12072 Old 01-03-2019, 04:18 AM
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Quote:
Originally Posted by cremor View Post
I'd like to calibrate a Samsung UE43NU7400 with an i1Display Pro but I don't know which display type I should choose. For my computer monitors I used the DisplaySpecifications website where it listed "W-LED". But for the TV it only lists "Edge-LED" as backlight type (see https://www.displayspecifications.com/en/model/5a1f125f) and that doesn't match any type in HCFR.
The TV should have a wide color gamut (called "Dynamic Crystal Colour" by Samsung). What's also complicating the matter is that it seems like Samsung ships this TV with both a VA and an IPS panel. I think that mine is an IPS.

Anyone an idea which display type would be the correct one?
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What "Display Type" is recommended for a Vizio E-Series using a ColorMunki Display colorimeter?
I've been using "Non-refresh" to this point, is that correct?
While the i1Display PRO/ColorMunki Display are field upgrade-able; so X-Rite can add new EDR tables when they will release new SDK files to calibration software developers... X-Rite hasn't released something new from 2012, so all display tech you see as selections of the meter, they are all based to 2011-2012 display tech samples, popular monitors that period to post-production/web/photo-editing market. The only display type where X-Rite used a consumer TV model was the Plasma table where they used a Panasonic Plasma. (here you can find info about which monitors used for the creation of each table)

When you have only a colorimeter, you will have to select the closest match of your display tech (but its not sure if you will have good results without a spectro).

The ideal solution is to use a spectrophotometer to create a unique meter correction table for your Sony.

If this is not possible, the only you can do is to calibrate 2-point grayscale with RAW XYZ (default calibration table of the meter, called Generic CMF also) and to another preset with W-LED (for example)... at end to swap between these 2 picture presets while you will look a grayscale ramp pattern and see which one looks more neutral to your eyes. (its guessing method, the results can be variable, for that reason its better to use a spectro).

Additionally, an another solution is to perform a perceptual matching, if you have a secondary display (older LCD for example, plasma) to place it side by side with your Sony, calibrate the older display 100% White with your i1Display PRO and then display a 100% White pattern from your Sony and without meter adjust the controls until you will have a perceptual match with the old display, then measure the white point and create a custom colorspace based to REC.709 but enter the custom white point coordinates, then calibrate your Sony based to that new custom colorspace as target.

The perceptual matching approach has been developed by Light Illusion in partnership with the professional display manufacture Flanders Scientific Inc. (FSI).

See: http://www.lightillusion.com/perceptual_colour_match.html

and FSI have their own version of the same information here: http://flandersscientific.com/index/...htSpaceCMS.pdf

While the instructions are written for LightSpace CMS, as that is what FSI use for all their factory calibration, the basic information will work with any calibration system, like HCFR, CalMAN etc.

When someone don't have access to a spectro, a workaround to improve his color accuracy (for DisplayCAL/HCFR/ArgyllCMS users) is to try locating a CCSS (Colorimeter Correction Spectral Sample) file, if someone has measured with his spectro and uploaded that spectral file for your display, it will work with i1Display PRO or ColorMunki Display (both meters can read spectral corrections).

But when you are using CCSS correction, you assume that the internal spectral data of X-Rite meter from the factory hasn't drifted, since the internal meter spectra + CCSS spectra data are used to create a correction matrix.

Using other people CCMX file will not work, only if you have your own meters combo (colorimeter+spectro) you can create matrix based correction (CCMX = Colorimeter Correction Matrix) which will be only valid for your current meters/display.
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V/P: eeColor 3D LUT Box - P/G: DVDO AVLab TPG
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post #11213 of 12072 Old 01-03-2019, 04:34 AM
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Quote:
Originally Posted by jamesb23 View Post
or whoever can help, I updated my HCFR version and am going to revisit my calibration for my LG C6 from 2016. I noticed that the spectral options in the drop down have two that are very similar: WRGB OLED LG B7 (2017) and WRGB OLED LG B7. Is there any difference? Which would be best for me to use on my 2016 C6?
Hi, the one of those CCSS files is the one Zoyd has created using his JETI 1211, it should say that info inside:

DESCRIPTOR "OLED RGBW (LG OLED)"
ORIGINATOR "HCFR ccss generator"
CREATED "Sun Dec 03 02:27:03 2017"
DISPLAY "LG B7(2017)"
TECHNOLOGY "WRGB OLED"
KEYWORD "DISPLAY_TYPE_REFRESH"
DISPLAY_TYPE_REFRESH "NO"
REFERENCE "JETI specbos"
SPECTRAL_BANDS "481"
SPECTRAL_START_NM "350.000000"
SPECTRAL_END_NM "830.000000"
SPECTRAL_NORM "0.003301"

Alternative solution is to use that one CCSS file which has been created from a ColorMunki Photo user with E6V: https://colorimetercorrections.displ...e%20gamut.ccss

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post #11214 of 12072 Old 01-03-2019, 06:10 AM
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Originally Posted by ConnecTEDDD View Post
While the i1Display PRO/ColorMunki Display are field upgrade-able; so X-Rite can add new EDR tables when they will release new SDK files to calibration software developers... X-Rite hasn't released something new from 2012, so all display tech you see as selections of the meter, they are all based to 2011-2012 display tech samples, popular monitors that period to post-production/web/photo-editing market. The only display type where X-Rite used a consumer TV model was the Plasma table where they used a Panasonic Plasma. (here you can find info about which monitors used for the creation of each table)
Actually that is not correct any more. The X-Rite i1Profiler software contains a correction file named OLEDFamily_28Aug18.edr. The author of DisplayCAL also added it to the corrections that are automatically downloaded in DisplayCAL recently. It's shown as "Spectral: LED OLED (Sony PVM_2541 & Samsung Galaxy S7 & LEN4140)" in both DisplayCAL and HCFR (I assume HCFR picks it up from the location where DisplayCAL puts it?)


Quote:
When you have only a colorimeter, you will have to select the closest match of your display tech (but its not sure if you will have good results without a spectro).

The ideal solution is to use a spectrophotometer to create a unique meter correction table for your Sony.
I wouldn't generalize it that much. I've read somewhere that they tested the combination of an i1Display Pro colorimeter and a normal (consumer grade) spectrometer vs. the correction shipped with the i1Display Pro. They found that the correction done by X-Rite was more accurate, even though it is a few years old. You'd need a very expensive spectrometer (I remember something like 1 nm?) to get an equally good correction yourself.


Quote:
If this is not possible, the only you can do is to calibrate 2-point grayscale with RAW XYZ (default calibration table of the meter, called Generic CMF also) and to another preset with W-LED (for example)... at end to swap between these 2 picture presets while you will look a grayscale ramp pattern and see which one looks more neutral to your eyes. (its guessing method, the results can be variable, for that reason its better to use a spectro).

Additionally, an another solution is to perform a perceptual matching, if you have a secondary display (older LCD for example, plasma) to place it side by side with your Sony, calibrate the older display 100% White with your i1Display PRO and then display a 100% White pattern from your Sony and without meter adjust the controls until you will have a perceptual match with the old display, then measure the white point and create a custom colorspace based to REC.709 but enter the custom white point coordinates, then calibrate your Sony based to that new custom colorspace as target.
So you say eyeballing it is the best I can do? There is no other site/DB that I could check or another way to find out the backlight type in use?
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post #11215 of 12072 Old 01-03-2019, 06:37 AM
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Originally Posted by cremor View Post
Actually that is not correct any more. The X-Rite i1Profiler software contains a correction file named OLEDFamily_28Aug18.edr. The author of DisplayCAL also added it to the corrections that are automatically downloaded in DisplayCAL recently. It's shown as "Spectral: LED OLED (Sony PVM_2541 & Samsung Galaxy S7 & LEN4140)" in both DisplayCAL and HCFR (I assume HCFR picks it up from the location where DisplayCAL puts it?)
The OLED spectral EDR file still contain as main correction the Sony PVM-2541 RGB OLED Monitor spectral sample is the 2011 old one, so nothing new, the additions where for a mobile phone and a notebook, nothing to do or help a WRGB OLED user.

Quote:
Originally Posted by cremor View Post
I wouldn't generalize it that much. I've read somewhere that they tested the combination of an i1Display Pro colorimeter and a normal (consumer grade) spectrometer vs. the correction shipped with the i1Display Pro. They found that the correction done by X-Rite was more accurate, even though it is a few years old. You'd need a very expensive spectrometer (I remember something like 1 nm?) to get an equally good correction yourself.
For what display are you talking about? Even the tables Klein K-10A is coming with (6900$ colorimeter) are useless when you will measure a consumer OLED, since they used a Sony Trimaster EL OLED RGB OLED, you still need a spectro all the times when you want to measure a display your colorimeter don't have a correction for exact the model you will measure.

Quote:
Originally Posted by cremor View Post
So you say eyeballing it is the best I can do? There is no other site/DB that I could check or another way to find out the backlight type in use?
The backlight spectral data used for X-Rite EDR files are super old, these displays don't exist anymore, now displays are wider and more exotic, for that reason you need to create unique meter profile when you have a spectro, if you don't have a spectro, using a CCSS file can help, but it's not the most accurate way, its always better to profile each display.

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post #11216 of 12072 Old 01-03-2019, 06:46 AM
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Originally Posted by ConnecTEDDD View Post
For what display are you talking about? Even the tables Klein K-10A is coming with (6900$ colorimeter) are useless when you will measure a consumer OLED, since they used a Sony Trimaster EL OLED RGB OLED, you still need a spectro all the times when you want to measure a display your colorimeter don't have a correction for exact the model you will measure.
I don't remember the display type that was tested (and I can't find the article any more), but it was one that had a matching display type correction from X-Rite (so it was not WRGB OLED).
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post #11217 of 12072 Old 01-03-2019, 06:48 AM
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I don't remember the display type that was tested (and I can't find the article any more), but it was one that had a matching display type correction from X-Rite (so it was not WRGB OLED).
To know which is better, you need to have 3 meters, iDisplay PRO, i1PRO2 and a higher grade spectro.

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post #11218 of 12072 Old 01-03-2019, 07:07 AM
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Hi, question about the WRGB oled correction, the below post indicates that the correction profile was made with a B7 in rec709 (normal) mode, is that correct? So would this be unsuitable to use with the TV in wide mode? I was assuming that for HDR calibration the TV would have to be in wide mode (LG C8).

https://www.avsforum.com/forum/139-d...l#post57273478
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post #11219 of 12072 Old 01-03-2019, 07:34 AM
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Hi, question about the WRGB oled correction, the below post indicates that the correction profile was made with a B7 in rec709 (normal) mode, is that correct? So would this be unsuitable to use with the TV in wide mode? I was assuming that for HDR calibration the TV would have to be in wide mode (LG C8).

https://www.avsforum.com/forum/139-d...l#post57273478
I have posted at past some SPD from 2016 LG OLED, but I don't remember If I used the Normal Gamut or Wide Gamut in SDR:



HDR:


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post #11220 of 12072 Old 01-03-2019, 11:04 AM
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While you will fix RGB balance errors, look at each % Grey data the meter reports, there is a Y (which shows to % you the measured % luminance) and the Y target (which show the % target luminance), and re-adjust your settings to fix gamma errors also, for that reason you don't see a straight gamma chart line because your gamma is not accurately calibrated.
I can see the Y and the Y-target now, but how do i change this? If i do a grayscale measurement now, i don't even get a nice straight line at 100%, but a bulge, 60% level at 10% white, 120% at 50% white and 100% at 90% white?

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