Most AI lighting tools work by imitation. They’ve seen enough images to guess what lighting should look like, and most of the time, that’s good enough. Until you push it.
Relighting is usually where things fall apart (even in the best video editing software). Drop a subject into a new environment, push contrast, or try to match a specific mood, and the cracks show up fast: skin goes flat, highlights feel pasted on, and hair stops behaving like hair. This is when it becomes obvious that imitation isn’t the same thing as understanding.
