With small viewing angles and the best choice of the position of the picture plane, the columns, when moving away from the viewer and corresponding reduction of their height in perspective images, still change their proportions: the thickness of the columns becomes disproportionate to the height.
This can be found even in perspective images constructed at small viewing angles.
In connection with the above, it is interesting to note that the eye movement, in which a spherical projection surface is created, makes it possible to correctly reflect prospective contractions proportional to the removal. Perspective images in some cases do not reflect with the required accuracy the actual image of the projected building. In addition to the purely graphical irregularity that causes the deformation of the shapes in the image, excessive angles and other distortions that arise create an incorrect idea of the viewer about the actual scale of the structure, its proportions. It is known, for example, that perspective images of buildings, halls, etc., built according to all the rules of perspective projections, often look unnaturally long or tall. The architect, when designing, using such perspective images to verify the decision made, will not be able to fully identify and take into account the characteristic features of the perspective image of the building under real viewing conditions.
Some of the most characteristic manifestations of distortion can be illustrated in photographs, which are basically similar to perspective images and are also a projection onto a plane.
