How to use DisplayCAL Free Display Calibration Software

DisplayCALのプロファイル設定方法

This section introduces how to install and use Display CAL, a display calibration software that is essential for photo editing and video editing. This is a monitor calibration software that is compatible with many calibrators such as i1Display, and it is a convenient software that allows you to use all functions completely free just by installing.

無料キャリブレーションソフト Display CAL

Indispensable calibration software for video and photo editors

This is a monitor calibration that is an essential item for those who work with photos and videos, but it not only adjusts the color temperature and brightness of the display, but also corrects the RGB values to reproduce accurate colors.
Display calibration is roughly divided into two types: hardware calibration, which is performed by connecting a calibrator directly to the display, and software calibration, which is performed using calibration software on the OS.
Software calibration adjusts the output from the PC to optimize the display, but hardware calibration is accurate because it adjusts on the display side without changing the output from the PC. But the corresponding display is quite expensive

What is DisplayCAL?

Since this software is compatible with most calibrators, it can also be used as a replacement if genuine calibration software such as i1 Profiler stops running.
On my pc, i1 Profiler stopped working at all, so I changed it to Display CAL, but it is easier to use than I expected, so I use it as it is.

Download and install DisplayCAL

Download from the DisplayCAL website.

  1. After opening the homepage, click Get DisplayCAL and select the OS of your PC.
  2. If you select OS, the installer (recommended) or ZIP archive item will appear. Please select the one you like.
  3. Click the downloaded executable file and install it according to the procedure.

I have already installed this software, so there is no picture of this procedure.

How to use DisplayCAL.

モニターキャリブレーションツールDisplayCAL設定画面

Preparation and setting of calibration software

Uninstall other calibration software and devices before using DisplayCAL.If these conflict, you may not be able to read correctly.

When DisplayCAL is opened, the screen as shown above is displayed. Select the display whose color you want to adjust.
White level drift compensation and Black level drift compensation are also checked, but it is an item to check the deviation between white point and black point during calibration. It will take some time to measure, but if you want accurate color reproduction, please enable it.
If the display is too bad and the quality is poor, it may not match either, so it may be better to uncheck just Black level drift compensation.

ディスプレイキャリブレーションソフトDisplayCALの設定
Then select the item of Calibration.
Set Whitepoint Color temperature to 6504K for web photo and video editing. This indicates the color temperature displayed on the display, but use it properly depending on the application, such as 5000K for printing and 9300K for NTSC.
Next, adjust the white level. This is the brightness of the display. I set it to 120.00cd/㎡. For sRGB, the maximum is about 120.00cd/㎡, and for AdobeRGB with a wide color gamut, it is desirable to set it to 160.00cd/㎡.
The Tone curve should be Gamma 2.4 or 2.2.
Calibration speed should be the default, but if accuracy is required, it should be set to Low.

DisplayCALのプロファイル設定方法

The formula recommends XYZ + matrix, so I think this is fine, but it is based on matrix, so there is a possibility that the color will change in Windows Photo Viewer.
If you are concerned about this, choose i1profiler version 2+ table base.
Testchart is the number of colors to measure. The more you increase this, the more accurate the displayed color will be, but it will take a considerable amount of time.
Keep the default Profile name as it seems easier to understand.
Click Calibrate & profile to display the measurement screen. Place the calibrator in the center of the screen.
Click Start & measurement to adjust the white point.

無料ディスプレイ調整ソフトDisplayCALの測定画面

Gray will be displayed for a while, but if you leave it, you will be able to select Start measurement. Click on it and you will see the screen above.
When the RGB and brightness of the display are adjusted to the appropriate values, the Target and Current displays will turn green.

Note: The appropriate contrast value is not displayed.

Adjust the contrast so that the RGB value does not reach 100%. About 90% should be good.

Start calibration

無料モニターキャリブレーションツールDisplayCAL
During calibration, the screen is as above.
If it is outside the proper value, you will hear a “beep” sound like the auto focus of a Canon single-lens reflex camera. If the result is correct, the sound becomes a shutter sound.
You can also mute it by clicking on the speaker icon.

Finish calibration and save ICC profile

キャリブレーションソフトDisplayCAL調整終了画面
This display will appear when all measurements are completed, but if you want to see the measurement results, check Show profile information.
Click install profile to install the calibrated icc profile as it is, or click Don’t install profile if you don’t like the result and want to discard it.

Measurement result

無料モニター調整ソフトDisplayCALの測定結果
The graph is distorted, but the Tone Value is 97.3%, so the measurement result is good.
Although it is evaluation of DisplayCAL, it seems that the accuracy is high though it is free software because the scene that repeats retrying many times was seen during calibration.
If i1Profiler does not start or if you want to try it out, I think it is a recommended calibration software.

amendment

フリーキャリブレーションソフトDisplayCAL監視アプリ
After calibration, DisplayCAL Profile Lorder will be resident, so the profile after calibration will be read after the computer is started.
Do not change the color or brightness of the monitor or graphic board while the icc profile is applied. If you change the color, you will have to calibrate again.
Since the brightness and color of the monitor may change while you are using it, calibrate it once a month.

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