I've got a Olympus Body Cap 9mm fisheye lens for my Panasonic DMC-GM1 camera. I was told to use Hugin to correct the fisheyed pictures taken with that lens.
When I import my pictures into Hugin, it asks me for the parameters of the lens:
I guess I have to enter 9mm into focal length, but what about the other fields?
Furthermore, which features do I have to use afterwards to correct my images? All I tried resulted in even more fisheyier pictures.
Is Hugin even the right tool to do what I want? If no, what other tool should I use? I'm running Linux, so Photoshop is not an option.