Consider the recent rise in Tungsten film and you get a great explanation for why the KONO! Kolorit 400 Tungsten Film could be so popular with portrait photographers. Like CineStill 800T, this film is a Tungsten film and designed to be shot in doors, in cloudy weather, during the night, etc. It's very much unlike daylight film and my favorite way of using it is to often just use strobe lighting to get the best effect that I can.