I am having a hard time trying to calibrate correctly my 5Mp 160° view usb camera with lightburn. When trying to take picture for camera distortion calibration, the picture is most of the time black, even if lightburn says it find the pattern, and sometimes it is like fish eye, as if lightburn wasn’t processing the image correctly.
The dot pattern is too small in the image, and I can’t tell for certain, but it looks like it could also be curled slightly. If that is the case, it will not work well - it has to be absolutely flat. You should also completely ignore the image on the right until you have more than one capture (usually around the 3rd one it starts to look right).