Why it matters
It makes the subject pop from a dark or busy background.
A back or side light that creates a bright edge around the subject.
It makes the subject pop from a dark or busy background.
Aim a small light at the subject's edge and keep it off the lens.
cinematic [subject] with subtle rim light, bright edge separation, dark background, [duration]
[subject] with subtle rim light edge, dark background, 3 seconds