Welcome to "Cameras at the Cinema"! Here's the premise:
Whenever poets write about songs, sirens or minstrels, they're normally writing about themselves and how they'd like their own work to be perceived.
Whenever novelists have characters perform any kind of extended writing (diary; letter; book) it is, again, usually some kind of reflection on their own work as writers
Similarly, then, every time a cinematographer features a camera in their film, it's a visual clue; an invitation to the cimema-going audience to reflect upon their work as cinematographers.
All clear? Then let us begin...