Cinematographer Benoît Debie used a Sony HDW-F900 camera (one of the first digital cinema cameras) with a wide-angle lens (4.5mm at f/2.8). The constant, nauseating camera movement and low-frequency “infrasound” (a 28Hz tone) were deliberately designed to cause physical unease and nausea in the audience.
When downloading or viewing a file labeled "Dual Audio 720p," users can generally expect the following technical parameters: irreversible2002 dual audio 720p
If you were to obtain a legal 720p copy (e.g., Blu‑ray rip from a licensed source): Cinematographer Benoît Debie used a Sony HDW-F900 camera