Fisheye focal matrix

Hello,

We are currently working on a project where we use a fisheye lens because there is not much space around the object.
These are two identical engines, both of which stand next to each other but the photos are divided into two blocks.
After AT the fisheye lens gets another focal matrix value for block1 than block2.
My suspicion is that something is not right here.

Should the matrix have a fixed value before proceeding with AT?

For this work we use:

  • Pentax K1 full frame camera (36.4mp)
  • Pentax K-mount 35mm f/2.4 AL
  • Pentax K-mount 28-105mm f/3.5-5.6 ED DC WR D-FA
  • Samyang 12mm f2.8 Fisheye for Pentax full frame camera's

I also have the following question:
Is it possible to use an endoscope-camera for capture context?

best regards,

Werner