Darktable | Color Calibrater Instructions | VFX Grace
Color calibrater, a tool to export the ICC file for Darktable.
ColorCalibrater is a stand-alone tool for calibrating colors, and it can be used together with Darktable. It is fully compatible with the industry-standard ColorChecker Passport and SpyderChecker. Users can transfer the images with color target to ColorCalibrater and it will generate ICC profiles in Darktable. After that, Darktable can directly read ICC profiles without restarting, which can save users’ work time. In addition, users can use automatic or manual method to align color target in ColorCalibrater.
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Installation Requirements:
Windows: Darktable 3.0.0, 3.0.1, 3.0.2, 3.2.1, 3.4.0.
Linux: Darktable 3.4. Tested systems include Ubuntu 18.04, Ubuntu 20.04, Linux Mint 19, Linux Mint 20.
Instructions:
Use Darktable to open the RAW image with the color target, trim the image to the same size of the color target, turn off base curve in Darktable, unfold the module of input color profile, and click the export to ColorCalibrater button to transfer the images with the color target to ColorCalibrater. (Tip: You need to correct lens distortion if needed before exporting the image to ColorCalibrater, because the images will become brighter if you correct it after color correction.)
Select the corresponding Color Target.
Select the corresponding Color Target in CC type in the right column of the ColorCalibrater interface.
X-Rite ColorChecker
Please select ColorChecker24 if X-Rite ColorChecker Classic (24 patches) is used, select ColorCheckerHalfPassport
if a complete X-Rite ColorCheckerPassport is used, and select ColorCheckerHalfPassport if one side of X-Rite
ColorCheckerPassport (24 patches) is used.
To learn more about X-Rite ColorChecker Classic (24 patches), please click here. www.xrite.com
SpyderChecker
Please select SpyderCHECKR 24 if DataColor SpyderChecker 24 is used.
Select SpyderCHECKR 24 if DataColor SpyderCheckr 48 is used.
To learn more about DataColor SpyderChecker 24, please click here. www.datacolor.com
Align Color Target
Align automatically: Please crop the image correctly before importing it to ColorCalibrater. As long as you set CC Type correctly, the software can automatically align the color target.（Click "show matching result" at the bottom to view the result.)
Align manually: Click on the Corner Pin then a colored wireframe will appear. Move four green cross cursors to align them with the Color Target. You can use the Rotate buttons to rotate it left and right. You can also use the Zoom below to scale the sample size of the color patch.
Tip: If the image is too dark, you can adjust the brightness by adjusting Gamma, Contrast, and Brightness at the bottom. Please be assured that it won’t affect the color correction but only make the image display with the proper brightness.
Note:
Some files will be replaced in Darktable to achieve some of the above functions, so you must install Darktable first and then install ColorCalibrater. If you re-install Darktable, you should install ColorCalibrater again.
If you need other types of color targets, please contact us.
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