Enquanto assiste ao filme, especialmente durante a cena do estacionamento, a cena é trocada por POV (o que é incomum, já que a maior parte do filme é filmado em POV), me convenci de que a cena foi trocada do POV porque vítima (uma dama) está fora de vista de Frank e o diretor queria que o público mostrasse onde a vítima está e como ela está com medo de Frank.
No entanto, depois de ler a sua pergunta, fiz alguma pesquisa na internet e encontrei esta entrevista com Franck Khalfoun (diretor do filme). Ele explica a razão pela qual o tiro foi trocado de POV na cena do estacionamento.
How did you choose those spare moments where we do see him?
KHALFOUN: I needed to see him at some point. It’s hard to sustain not seeing your character through a whole movie so we had to figure out ways for me to see him sometimes. Once you see him you want to see him again soon so you start looking for him throughout the film. One of those was mirrors and reflections, obviously if you’re looking in a mirror you see yourself so if you’re in a guy’s brain you can see him see himself. Another one was dreams, when you’re dreaming you see yourself a lot of times in your dreams so that conceptually stayed within the framework of POV. Then in reading and doing research I saw that a lot of these guys, a lot of these killers, have out of body experiences where they aren’t in themselves, they’re being pulled out and watching themselves kill from the outside. So I thought that’s interesting, we’re still within him but were experiencing this out of body thing. So that’s why it pulls out.
That’s the shot I was really curious about, the one in the parking lot.
KHALFOUN: Where he’s killing and all the sudden we pull out and you see him doing his thing. He’s experiencing watching himself. He’s having an out of body experience while committing this horrific act.
That is very cool.
KHALFOUN: It is cool and it allows us the audience to participate an experience that serial killers have talked about, and it also allows us to see the character as he commits his crime.
Como você está muito intrigado com este filme, tente esta entrevista com Franck Khalfoun.