Aria
What is "tighten on"?

"Tighten" usually means something becomes very compressed, compact, or close together. In this case, "tighten on" refers to a "tight shot" in filmmaking, where the camera zooms in to take an extreme close up of someone.
"Tighten" usually means something becomes very compressed, compact, or close together. In this case, "tighten on" refers to a "tight shot" in filmmaking, where the camera zooms in to take an extreme close up of someone.