When is a photo truly one-point perspective, and can a scene have multiple vanishing points?

Question

I’m trying to understand how one-point perspective is classified in photography and cinematography.

My understanding is that one-point perspective occurs when one set of scene lines receding in depth is perpendicular to the image plane, while the other main directions stay parallel to the image plane, so they do not create additional visible vanishing points. In a hallway shot, for example, the corridor lines all converge to a single dominant vanishing point.

But in a real scene, objects may be rotated differently. For example, if a cube sits obliquely on a table in that hallway, the cube’s horizontal edges could create a second vanishing point even though the room still seems to read as one-point perspective. Likewise, if the camera is tilted slightly up or down, the main vanishing point may no longer sit at the image center.

So how is perspective classified in practice? Is a photograph still considered one-point perspective if the dominant structure of the scene converges to one vanishing point, even though smaller objects introduce others? More generally, in real photography can a scene contain many vanishing points, and if so, how do we describe it?

user70370 · Accepted Answer

So how do we decide which vanishing point is the one that determines the perspective?

We don't; at least not in photography... it is the perspective (point of view/camera position) that determines the vanishing point(s); not the other way around.

Similarly, in composition/drawing/etc you decide which vanishing points/references to use to create the resulting perspective (place the viewer in the scene)... the desired perspective comes before the creation/placement of the vanishing point(s).

If trying to work out what the artist intended (if they actually/knowingly used such techniques); the best you can do is to "place yourself in the scene," as best you can with the visual cues given.

Edit: A scene has a single perspective; that of the viewer/camera (position/angle/distance). But it cannot be defined as one point, or two point (or 5).

"Point" perspective may be better thought of as the viewer's perspective of an object at that point in the scene; and it only relates to that object, not the scene as a whole.

Edit to address the additional questions:

What perspective is this? Both one-point perspective to the room and two-point perspective to the cube?

Yes.

so what would you label this, if it were a painting?

I wouldn't, but If I had to I would probably describe it as two point because that is the characteristic of the dominant object, and it hides where the other resolves to.

When is a photo truly one-point perspective, and can a scene have multiple vanishing points?

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