I read the FAQs and the Manual and still was not given an explanation about what the difference is between p2 and p2 pn. It appears that I cannot set the setting for the pn mode within the camera but must always do it through the firestore. I am still confused on what the difference between the modes are?
It seems like to do variable frame rates you must shoot in in the pn mode, is this correct? Is this the only advantage to the pN mode? And does this mode record audio if you have not changed the frame rate in the camera?