One of the more annoying things about Facebook has got to be the diminished quality of photos and videos you upload to the service, be it via iOS's Facebook integration integration or through the official mobile app for the iPhone and iPad, a free download in the App Store.
For whatever reason, Facebook's mobile app defaults to low-resolution photo and video uploads, likely in an effort to minimize bandwidth usage in this digital age of capped cellular data.
Fortunately, there is an easy yet not immediately obvious way to configure Facebook for iPhone and iPad to record and upload videos and photos in glorious high-definition.