I have a Pi Camera V2 NoIR camera install and it does work.
I have installed the camera plugin and I see "Camera Settings" in the OctoPrint setting.
I make a drastic change to the settings such as Horizontal flip, or change the hue to -90, then click save and no change is ever displayed. I have tried similar changes to both gspca main driver and camera0.
I also tried saving the settings as preset, which does keep the changes, but the camera preview and camera on the control window never change.
I have read a few post about the Camera Settings plugin, so I tried to add debug level logging, and Camera Settings log never appears. I added logging for another plugin to make sure I was adding logging for the plugin correctly and the logging for the other plugin works.
I do not know where to go from here. Does OctoPrint need to be restarted after changes to Camera Settings?