Using a probe that is inherently inaccurate, or has an incorrect matrix selection, can do more than just cause inaccurate calibration.
It can cause the verification to be inaccurate, as the initial inaccuracy is not cancelled-out by using the same inaccurate probe for the verification.

https://www.lightillusion.com/probe_accuracy.html

Steve

Ah Mr Shaw! Good article, very good. I continue to be amazed by people who think they can get any old edr and expect the calibration to be perfect. May be though in the lower cost versions of CS, you allow or purchase an add on or time limit, whatever, where the user can use an expensive spectro to create a probe match for their wide gamut display? (if they can get hold of one of course). Just a thought.

stuart_p
As you can manually enter the RGBW values from any probe into Probe Matching you can actually use any Spectro for Probe Matching with any license level of ColourSpace.

Steve