Camera Lens Calibration - new question

[Allen (Allen Massey)]

So I refocused my camera was going through the lens calibration again to tweak out a tiny bit more precision on the positioning.

When I started getting this message on the Lens Calibration.
Pattern found - Score: nan

Not sure what that means. Is it OK to use, if the score is nan?

[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.

[Allen (Allen Massey)]

Thats what I thought, it was the “Not bad! click next” that was making it confusing.
Thanks

[Rick (Technical Evangelist)]

Noticed that. Thanks for spotting. You must have gotten better scores with you first few captures. This is capture number 6. Do you remember how the others scored?

[LightBurn (Oz)]

Yeah, the NAN only happens with the fisheye calibration and is new. I need to add code to catch it specifically.

[Allen (Allen Massey)]

The previous scores were just slightly under 1. I had not selected “fisheye” lens.

[Blake (Blake Bartlett)]

FWIW I got the same thing today. I did select fisheye lens. I figured it was a bad capture due to the lack of an image.