I have a Panasonic GH7 and I want to shoot a film in darkness both indoors and outdoors. I have attached some images that show the look I am going for. I know that I will not get as good a look as Dario Argento does with my relatively cheap camera, but I was looking for advice on what aperture, iso, and shutter speed I should use.
I would also like to point out that I already have large sized colored flood lights available to use. Also, what effects could be done in post to make my film look similar?