As we neared the end of the mixing stage, we wanted to bring everything together in mastering.
I understood about compression regarding music but adding it to film audio was very different.
Our first attempt at compression ended with a lot of the quiet Foley being brought higher into the mix and changing the levels of everything.
Premium Beat had an article that helped me figure out where I was going wrong.
They explain how compression isn’t too common a practice and this is something that echoed through other articles and forums as well.
Most post-production seems to consist of setting levels and checking the client is happy.