if you are looking for a step-by-step tutorial that shows you how to use the X-Rite ColorChecker Passport with Capture One software, then you will have to check this out.
X-Rite has recently released a beta version of their software that is compatible with Capture One, unfortunately the video tutorial they created lacks a few important details. In this video and article I will walk you through step-by-step how to create an ICC profile you can use in Capture One.
The first step is to make sure you download the correct version of the software, Color Checker Camera Calibration ICC v1.2.0 at the time of this article. Once you have the software installed on your computer you will need to take a shot of the ColorChecker Passport in the lighting environment you intend to create a profile for.
Then export the image with the following settings. Tiff 16 bit, ICC embedded camera profile and resolution 300 px/in.
You can then drag and drop the exported tiff file into the X-Rite color calibration software and create an ICC profile you can use in Capture One. Before you export the tiff file make sure you name it something that makes sense and that you will remember.
The next step is to close Capture One and the re-open the software so you can access the new color profile. Look under ICC profile: (other) for the new custom profile you just named.
Choose the new ICC profile and experiment with the curve setting and the other adjustments, you may also want to compare the custom profile with the generic profile Capture One creates and see which one you prefer.
You may find that you prefer the out of the box Capture One profile over the X-Rite custom color profile. Try both and let me know what you prefer in the comment box below.