[quote]Aerial perspective or atmospheric perspective is the effect on the appearance of an object by the atmosphere between it and a viewer (or the technique of depicting this effect in a work of art, such as a landscape painting). As the distance between an object and a viewer increases, the contrast between the object and its background decreases. The contrast of any markings or details on the object also decreases. The colours of the object also become less saturated and shift towards blue.
Aerial perspective was discovered and named by Leonardo Da Vinci, who used it in many of his works, such as the Mona Lisa, in order to suggest distance.[/quote]


Read more: http://www.jmg-galleries.com/blog/2007/03/21/photo-term-series-post1-aerial-perspective-disambiguation/#ixzz1n6EycoSK