Beautiful footage, the only thing I would say is that there are some scenes that it looks like you're trying to push too much color into and it's starting to break up and your neutrals are casting too blue in some shots. It's not something most...
The change happens at 1:11... I am not sure why it would happen at all if the settings were on manual.
As for the panning, oh, absolutely... this video was for testing only... I do quite a few productions for people, and have worked as a camera...
I looked through your footage and I really didn't see any jarring exposure changes. The change may have happened during one of your pans or something like that but wasn't really all that apparent. When you are shooting as the sun is coming up or...