The Triangle System
A dialogue scene needs a plan for where the camera goes. The triangle system gives you every shot you need from positions on one side of the line. Click through the setups, then cut them together on the timeline and see for yourself: any order works.
Your two wing cameras and your master form a triangle: the base runs parallel to the line of action, the apex sits back at the master. Every setup is a point on it, and because all three corners share one side of the line, any shot cuts with any other, in any order. The timeline above shows it.
Master two-shot
Shot from the apex of the triangle. Both subjects in one frame. It establishes the geography every other shot depends on.
Angular singles
Taken from the base corners. One subject per frame at a three-quarter angle, framed with lead room. These are the shots you intercut through the dialogue.
Over-the-shoulder
Slide along the base and drop to shoulder height. The near subject becomes a solid mass at the frame edge; the far subject sits clear beyond. Grounds both people in one space.
Point-of-view close-ups
Push a base camera just inside the subject's eyeline and shoot the other from their point of view. The most subjective single. Save it for peak emotional moments.
Profile shots
Sit square to a subject's eyeline, on either side of the triangle. A pure side view with strong graphic quality. Frame off-centre with lead room, never dead centre.
Any shot cuts with any other
All three corners sit on the same side of the line, so every shot shares one screen direction.
Skipping the master
If the singles refuse to cut together, the master is your escape. It costs one setup. Never skip it.
All singles, no OTS
A scene cut entirely from tight singles feels floaty, with each character in a separate void. OTS shots ground them in shared space.
Drifting over the line
All positions must stay on one side of the line between the subjects. Drift across and screen direction flips mid-scene. That is the 180-degree rule.
