Camera Lens Calibration - new question

[Rick (Technical Evangelist)]

Using the search for the forum, “nan” returns this:

@LightBurn

NAN is “not a number” - usually infinity, and it’s what happens when a computer tries to do something impossible like take the square root of a negative number, divide by zero, or something like that. If you see NAN, it’s not a good capture, so you’ll need to try it again.