Graphical projection Perspective projection is a linear projection where three dimensional objects are projected on a "picture plane". This has the effect that distant objects appear smaller than nearer objects. It also means that lines which are parallel in nature (that is, meet at the point at infinity) appear to intersect in the projected image, for example if railways are pictured with perspective projection, they appear to converge towards a single point, called vanishing point. Photographic lenses and the human eye work in the same way, therefore perspective projection looks most realistic. Perspective projection is usually categorized into "one-point", "two-point" and "three-point
The Colossus (painting) crowd. The effect of the light, which possibly indicates sunset, surrounds and highlights the clouds that encircle the giant's waist as described in Arriaza's poem: This slanting light is fractured and interrupted by the mountain peaks increasing the sensation of disequilibrium and disorder. The effect is similar to Luis de Góngora's famous "dubious daylight" ("Fable of Polyphemus and Galatea" v. 72.). Instead of a centripetal composition where all the indications point towards a central nucleus, in this painting all the lines of movement shatter the unity of the image into multiple paths towards its margins. The painting can be considered