Shooting at night can be extremely costly and challenging logistically, which is why some filmmakers opt to shoot some (or all) of their night-scenes during the day.
If you’re not familiar with the terminology, “day-for-night” simply refers to a production and post process that is used to manipulate daytime footage to appear as if it were shot at night.
Filmmakers often ask me for advice for achieving a day-for-night look, so I thought I would outline my process here on the blog once and for all, and make my Day-For-Night color grading preset (LUT) available for a free download.