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You must
choose your camera type. The PerspectiveCamera performs a perspective-aware
projection, where distant objects will appear smaller than nearby objects of
the same size. This provides the most naturalistic mapping of 3D onto a 2D
image. However, you may not want perspective – for certain kinds of model,
the distortion inherent in perspective is undesirable. For example, if you
are rendering data as a 3D graph, you might want to avoid perspective. This
will produce a less natural looking picture, but it makes it easier to see
the size or height of features, which for graphs or certain kinds of diagrams
may be more important.
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