Practice question · Numerical answer
A one-point construction has its distance points 45 centimetres to either side of the centric point. From how far away, in centimetres, must the picture be viewed for the construction to be correct?
Hints
- The distance points encode the viewing distance directly.
- The distance from the centric point to a distance point is the viewing distance.
Show the answer
45 (answers within ±1 count)
Why
45 centimetres. The construction is right from one place only, and that place is fixed the moment the distance points are chosen. Choose them close together and you have built a picture for a viewer with their nose against it, which is exactly how a painting acquires a distortion nobody can correct later.
Practise Pictorial Space and the Picture Plane
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