Editing technique: two consecutive shots from different camera angles (e.g., 45° then 90°) create spatial depth and movement. Kubrick and Fincher deploy systematically.
You cut two shots together, both from different camera angles—and suddenly spatial presence emerges where before there was only a flat sequence. This is Angle Plus Angle: not simply a cut from A to B, but a conscious geometric shift that gives the viewer the feeling of moving through space themselves, even though the camera is stationary.
The mechanics are simple, but the effect is subtle and powerful. If you show a person from 45°—slightly from the side, with depth in the background—and then cut to 90° or even 180°, you see the same person from a completely different perspective. The human eye registers not only the new viewpoint but also the spatial shift. The impression of camera movement without movement is created—or rather, of ourselves as a mobile observer. The two angles "add up" to a 3D experience, even though each shot is isolated.
On set, this only works if you plan your shots geometrically from the start. You mark your camera positions like points on a compass—45°, 90°, 135°. Then you shoot each take separately, paying attention to consistent lighting and shadows. In the edit, these angles are placed sequentially, and the viewer experiences a spatial progression. Fincher uses this obsessively—his interiors feel spatially "atomic" because each new shot is offset by a strict angle. Kubrick did something similar: geometric precision as a style.
The effect also works psychologically. A simple cut between two similar angles feels sluggish; Angle Plus Angle, on the other hand, creates visual tension through geometric contrast. You don't need much action—just two different spatial perspectives on the same subject. However, be careful that your angle jumps aren't too radical, otherwise it will seem arbitrary rather than deliberate. A 45° offset works better than a random jump. And your depth of field should be similar in both shots, otherwise the spatial connection will break down again into two separate shots.