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Hello all,
I want to calibrate my laptop’s screen to have greater color accuracy when creating digital art, but I’ve never performed a calibration before, and I’m having a hard time figuring out how best to configure DisplayCal.
My computer, lighting, and other such details are as follows:
Hardware:
Laptop model: Toshiba Satellite C55-B5295
Display model (according to DisplayCal): LP156WH4-TLN1 @ 0, 0, 1366×768
Display type: LED-backlit TFT LCD (I believe)
Panel technology: TN
Calibration device: Calibrite Display Plus HL colorimeter
Software:
Operating system: Linux Mint 22 Cinnamon
DisplayCal version: 3.9.11
Digital art program (in case it’s needed): Krita
Environment:
I work near windows, so there is a decent amount of natural light during the day, and in the evening, multiple lamps are turned on.
And these are my DisplayCal questions:
1. Is it possible to create a profile for my system’s current colors in case my colorimeter produces an inaccurate calibration, and I need to revert back to the old colors?
2. One article that I read said to select ‘show advanced settings’ from the ‘options’ drop-down menu. Is this necessary? If so, how should I set up these advanced settings?
3. When I first open DisplayCal, a window titled ‘Import colorimeter corrections from other display profiling software’ pops up with the ‘i1 Profiler (i1 Display Pro, ColorMunki Display, Spyder 4, Spyder 5)’ option ticked and some text that says ‘If you don’t have a CD and the required files cannot be found otherwise, they will be downloaded from the web. A preselection was made based on the detected instrument. Please select the file(s) to download.’ Then, if I close this window and click on the little globe icon next to the ‘Correction’ setting of the main DisplayCal window, a different window titled ‘Check online for colorimeter correction’ pops up with three options (see attached image) for an LG LP156WH4-TLN1 type display. So, should I download the corrections from the ’Import colorimeter corrections’ window, the ‘Check online’ window, both, or neither? And in the case that I should download one of the options from the ‘Check online’ window, which one should it be?
4. The options from the drop-down menu for the ‘Correction’ setting are currently ‘None’ and ‘Auto (None),’ but am I correct in assuming that this will change if I import one or more of the corrections discussed in my previous question? If so, should I select a correction? Which one, if yes?
5. Should I choose ‘Defualt (Gamma 2.2),’ ‘Laptop (Gamma 2.2),’ ‘sRGB,’ or some other option from the ‘Settings’ drop-down menu located at the top of the DisplayCal window?
6. Since I use my laptop in a space that has ambient light exposure, should I use the ambient light measurement feature? If so, should ‘Interactive display adjustment’ be deselected? I read that these two features come into conflict with each other over the colorimeter diffuser.
7. Even if I don’t use the ambient light measurement feature, is it recommended to have ‘Interactive display adjustment’ selected since the only adjustment my laptop can be used to make is the one for brightness?
8. Speaking of brightness, I read that one should select a comfortable brightness level for one’s screen before beginning a calibration, but if the ‘Interactive display adjustment’ feature then has one alter this level, which may result in a screen that is too light or too dark for one’s liking, is it better to just forgo enabling this feature altogether?
9. Based on my particular situation, what configurations are best for the ‘Whitepoint,’ ‘White level,’ ‘Tone curve,’ and ‘Calibration speed’ settings?
10. Should I change the ‘Amount of patches’ setting or leave it at the default of 175?
11. Is it possible for me to add words (Toshiba, for instance) to the profile name, or will that conflict with the % naming system?
Much thanks!
Calibrite Display Pro HL on Amazon
Disclosure: As an Amazon Associate I earn from qualifying purchases.from screenshot the “spectral” one (CCSS). But since it’s a low res TN high chances to be a WHite LED using generic correction bundled with DisplayCAL.
Also it’s very likely a low contrast TN laptop so you have two choices: aim for D65 and loose more contrast or aim to closest daylight white, a little bluish white but keeping max contrast.SInce the low cost TN are unlikely to be use for any kind of editing or serious work, just try to fixing grayscale and whitepoint so office work is more confortable.
So default settings with optional whitepoint set to d65 should be you calibration target.Thank you very much for the advice.
So, if I am understanding correctly, should the settings be as shown in the attached images?
Also, a few quick questions:
1. Is there any need to import either the spectral correction you spoke of (which is for an LG LP156WH4-TLN1 type display and references a ColorMunki device) or the i1 Profiler (i1 Display Pro, ColorMunki Display, Spyder 4, Spyder 5) correction?
2. Since you didn’t mention it, am I right in assuming that I should not use the ambient light measurement feature, even though the lighting conditions of my workspace change depending on the time of day?
3. Can I add words to the profile name without using % placeholders (for instance, Toshiba %dns %out %Y-%m-%d), or will this cause issues?
4. Is there a way to save my screen’s current colors so that I can revert back to them in case the calibration ends up looking off?
Thank you.
1 yes, otherwise your measurements would be wrong. It’s like measuring with a stretched ruler: it says 30cm but it’s actually 32cm.
You need one. Very likely to be “White LED”2 always off that feature, whatever it corrects will be undone by color management becuase at profiling stage it will store actual display response, not “intended display response”
3 AFAIK yes
4 on hardware you will ony modify RGB gain/offset & brightness, and you’ll do it manually, so write default values and your won values too. DIsplayCAL won’t modify HW settings.
Regarding grey calibration, it is stored on the custom porfile you made with DIsplayCAL, so by re selecting as display profile the one you have right now, whatever DisplayCAL did on gray scale will be undone.Hints:
Calibration speed is about how many patches to show to correct grayscale. You are very optimistic on a laptop TN panel. I would set it at least to medium ( 12 , 24 then 48 patches on grayscale)
Although these laptop TN displays are usually bad behaved, hence the need os profilling them by measuring and store display behavior in a 3D mesh (XYZLUT profile), some software may not like it because it would only support matrix profile. But IDNK what kind of software you are using. Maybe XYZLUT is the profile type you need.Okay, I imported the i1 Profiler correction. Do I need to import any of the matrix/spectral correction options as well? I’m just wondering if they are compatible with my hardware because they are all for an LG LP156WH4-TLN1 type display and my laptop’s display type is merely LP156WH4-TLN1. Additionally, the spectral correction is listed as referencing a ColorMunki device, and my device is a Calibrite/X-rite one. But I don’t know if any of that matters. By the way, if it helps, I’ve attached a better picture of the correction import options.
Also, when you said ‘very likely to be “White LED”,’ did you mean that I should select the ‘Spectral: LCD White LED Family (AC, LG, Samsung)’ option from the drop-down menu for the ‘Correction’ setting?
The lowest number of patches I can set DisplayCal to is 34 (the next number being 79). Is this acceptable? Or did you mean that I should change the ‘Calibration Speed’ setting from ‘High’ to ‘Medium’ and leave the patch number at the default of 175?
The digital art software that I use is a program called Krita, but I couldn’t find any information on whether or not it can accommodate XYZLUT profiles.
Okay, I imported the i1 Profiler correction. Do I need to import any of the matrix/spectral correction options as well? I’m just wondering if they are compatible with my hardware because they are all for an LG LP156WH4-TLN1 type display and my laptop’s display type is merely LP156WH4-TLN1.
CCSS you may try it over generic. CCMX you should not try it.
Additionally, the spectral correction is listed as referencing a ColorMunki device, and my device is a Calibrite/X-rite one. But I don’t know if any of that matters.
For ArgyllCMS all members of i1d3 family are the same. All.
By the way, if it helps, I’ve attached a better picture of the correction import options.
As explained abobe: bad, maybe good, bad in that order
Also, when you said ‘very likely to be “White LED”,’ did you mean that I should select the ‘Spectral: LCD White LED Family (AC, LG, Samsung)’ option from the drop-down menu for the ‘Correction’ setting?
yes
The lowest number of patches I can set DisplayCal to is 34 (the next number being 79). Is this acceptable? Or did you mean that I should change the ‘Calibration Speed’ setting from ‘High’ to ‘Medium’ and leave the patch number at the default of 175?
Calibration speed : correct white & grey (all you can do about calibration)
Patch set : measure and capture display behavior AFTER grey calibration is done. Idealized profiles, described by primaries (matrix) and “grey scale gamma” need less patches. 3D mesh display behavior capture need more, like dots in a 3D mesh cube.
The digital art software that I use is a program called Krita, but I couldn’t find any information on whether or not it can accommodate XYZLUT profiles.
IDNK what Krita supports… but if that laptop is the typical 60% sRGB TN for office use… pretty useless to you your laptop for that task even (grey)calibrated. An external display, even sub 200 euro depending on your budget wpuld do a better job on certain models.
Thank you for the clarification.
So, are the following settings correct then, or would you suggest further tweaks?
Settings: Default (Gamma 2.2)
Mode: LCD (Generic)
Correction: CCSS (the ColorMunki one)
Interactive Display Adjustment: Selected
Whitepoint: Color temperature at 6500 K
White Level: As measured
Tone Curve: Gamma 2.2
Calibration Speed: Medium
Profile Quality: High
Testchart: Auto-optimized
Amount of Patches: 175
Also, how does one delete old profiles once they are no longer needed/relevant?
And do you happen to have any suggestions for what I should look for in an external monitor?
Thank you.
Also, how does one delete old profiles once they are no longer needed/relevant?
In windows there is an HOME\Appdata\Roaming folder with DisplayCAL name. It stores profiles, reports…
Also installed profiles go to c \ windows\ system32 \ spool \ driver \color in the same way as any other calibration / profling software
And do you happen to have any suggestions for what I should look for in an external monitor?
Let’s see how does this laptop behave.
Also IDNK your budget. Benq “PD” displays usually are very good for the price 27″ QHD, 27″ UHD, “SW” aren’t. Beware your HDMI limitations on laptop, it may be 1.4 so no UHD@60Hz.So, just to confirm, the DisplayCal settings that I previously shared are all correct? Including the patch number of 175 and medium calibration speed?
My OS is actually Linux Mint Cinnamon. Would you happen to know what folder I would have to navigate to in order to remove old DisplayCal profiles in this case?
And thank you for the display recommendations. I cannot find any information on my laptop’s HDMI version, but it may very well be 1.4, as you said, so I guess I can eliminate 4K monitors from the potential options, should I need a second screen.
So, just to confirm, the DisplayCal settings that I previously shared are all correct? Including the patch number of 175 and medium calibration speed?
IDNK which profile type you are using. If you enable advance in options you’ll see them.
Matrix = well behaved displays, good additive only behavior, display can be predicted by gamma and RGB primaries
XYZLUT = 3d mesh profile to capture innacuraces.
Most CMM like just matrix. IDNK GIMP or other Linux editing software.My OS is actually Linux Mint Cinnamon. Would you happen to know what folder I would have to navigate to in order to remove old DisplayCal profiles in this case?
No, but in OS configfuration, color management you’ll see your current profile. Try to find its path and proceed in the same way as Windows.
I found out that while Krita supports LUT functionality, it does not natively support XYZ LUT files.
When I click to view the advanced options in DisplayCal, ‘Profile Type’ shows as being set to ‘XYZ LUT + Matrix.’ Because of Krita’s limitations, should I change this setting to one of the following: ‘Curves + Matrix,’ ‘Single Curve + Matrix,’ ‘Gamma + Matrix,’ or ‘Single Gamma + Matrix?’
And should I change any of the other advanced options or leave them as they are?
Lastly, I am only able to use the ColorMunki spectral correction when ‘Mode’ is set to ‘Refresh (Generic)’ rather than ‘LCD (Generic).’ Is this okay?
Actually, I need to make a correction to something that I just posted:
I said: ‘I found out that while Krita supports LUT functionality, it does not natively support XYZ LUT files.’ However, upon further investigation, I cannot say whether or not the latter is true. The official Krita documentation on the matter merely says ‘Krita has two systems dedicated to color management. On the one hand, we have lcms2, which deal with ICC profiles, and on the other, we have OCIO, which deal with LUT color management.’ I personally don’t know what this means in regards to XYZ LUT support, but perhaps, if you don’t mind giving it a quick peruse, the aforementioned documentation can provide further insight?
The remainder of what I had initially posted remains mostly the same:
When I click to view the advanced options in DisplayCal, ‘Profile Type’ shows as being set to ‘XYZ LUT + Matrix.’ Should I change this setting? If so, what to?
And should I change any of the other advanced options or leave them as they are?
Lastly, I am only able to use the ColorMunki spectral correction when ‘Mode’ is set to ‘Refresh (Generic)’ rather than ‘LCD (Generic).’ Is this okay?
Lastly, I am only able to use the ColorMunki spectral correction when ‘Mode’ is set to ‘Refresh (Generic)’ rather than ‘LCD (Generic).’ Is this okay?
it has litte to none impact. there was a bug when creating CCSS. just edt CCSS text file and set referesh to NO if it bothers you
When I click to view the advanced options in DisplayCal, ‘Profile Type’ shows as being set to ‘XYZ LUT + Matrix.’ Should I change this setting? If so, what to?
“XYZLUT + matrix” stores both 3d mesh and a matrix idealization of that mesh, like if it was pure additive display with no irregularities.
If an app only supports matrix, if should read that part of profile. On widegamuts it’s easy to spot if it is working properly: just paint 255 green and see if it looks sRGB.
On smaller gamuts than sRGB it may be more difficult to test if it is reading the matrix section, maybe painting a saturated but in display gamut color on Krita/GIMP, then reading rendered value with ArgyllCMS spotread assuming that Krita is using relative colorimetric (clipping OoG).According to the information I have been able to gather, if it is accurate, my Linux Mint OS supposedly can utilize both matrix and XYZ LUT profiles due to having a package called LittleCMS installed.
However, Krita itself has a ‘LUT Management’ tool (see corresponding attached image), in which I can enable OpenColorIO, and when I do so, there is a ‘Configuration’ setting that allows me to search my file browser, so I am assuming that this will allow me to import a DisplayCal XYZ LUT profile. Do you know if this is indeed how I would load the 3D profile in Krita?
There are also color management settings in Krita that allow me to import a profile (ICC, I believe) for my display. The current rendering intent is set to ‘Perpetual,’ but according to Krita documentation, matrix profiles automatically default the rendering intent to ‘Relative Colorimetric,’ so I guess that I will be able to test, in the manner that you described, if the profile is being read properly once it is applied.
Since I will be using the ‘XYZ LUT + Matrix’ profile type, I am assuming that I need to enable and configure the 3D LUT tab in DisplayCal? Would you happen to be able to recommend what settings I should use, if so? I have attached a screenshot with all of the options for reference.
