@heckflosse- Confirming that this is working. New area to learn… nice…
The lens distortion is still visible initially, but it corrects when Distortion Correction filter is moved to minimum. Perhaps lens data is missing in the database?
camconst.json modified at system level for now. The attempt to place it in the options file folder as mentioned in the file text did not succeed. I may have made some mistake. Will retry.
Thanks again for helping precisely. Much appreciated.