Perspective, on the other hand, refers to a set of systems or mechanisms used to produce representations of objects in space as if seen by an observer through a window or frame. When using perspective, there is a vanishing point that all lines must go to. This creates the illusion of objects going back into space or coming forward. Here is an example of a perspective drawing that I drew:
The image is actually drawn in two-point perspective. This is when there are two vanishing points that the lines are drawn towards. In this particular image, the two points are not even on the picture, they go off onto either side past the paper.
Another topic the chapter talks about is the camera obscura. This is a simple device that is based on the phenomenon that light rays bouncing off a well-lit object or scene, when passed into a darkened chamber (a box or room) through a tiny hole, create an inverted projection, which can be seen on a surface inside the chamber. These devices were also found in artists' studios, where they were used, much like the perspectival grid, as a drawing instrument. This technique was used by the artist Vermeer. It is described in the novel Girl With a Pearl Earring by Tracy Chavalier. In the novel, Vermeer uses the camera obscura to help him realize what is missing from his paintings in order to make them perfect. He will seem finished with a painting, then he will look through the camera obscura. After looking through it, he would either subtract something from his painting, or add something that originally was not there but needed to be there to make the painting perfect to his standards.


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