You can tell shit.

It's one of the best looking movies ever. Disturbing as hell.

What are you talking about??? A film doesn't need to look and sound like a polished jewel in order to be effective, and this is the best example of that. To make this film look beautiful and sound beautiful would destroy what the film is.

It looks plain, harsh, and unforgiving. And thats exactly the point here.

I wouldn’t say it looks like shit at all, it’s a clean sharp image with high quality lenses, deep focus in many scenes with a distortion free wide lens that present the characters and scenes in a very unadorned manner and emphasise the straight lines of the architecture. It’s just a different style that is not conventionally filmic. The majority of shots are static, and have no pretension of trying to artificially make anything pretty through shallow depth of field, additional lighting, fancy moving camera shots (bar a few shots on rails) or making colours pop through colour grading, a good chunk of the film is in a fairly muted palette . The thermal camera work is quite beautiful, but again born of the question how do you film something without adding any artificial light?