Camera Configuration (trigger): Ardupilot Camera Parameters vs Camera Trigger Hierarchy

Hi,

I have a question regarding camera trigger configuration. Which one will prevail, the ardupilot camera shutter speed (e.g CAM1_DURATION = 0.1), I mean the output from controller I use to trigger over wire the camera or the camera setting itself (e.g. 1/400), that can be set apart of the flight controller.

Tks