ⓘ Category:Artistic techniques


Aerial perspective

Aerial perspective or atmospheric perspective refers to the effect the atmosphere has on the appearance of an object as it is viewed from a distance. As the distance between an object and a viewer increases, the contrast between the object and its background decreases, and the contrast of any markings or details within the object also decreases. The colours of the object also become less saturated and shift towards the background colour, which is usually blue, but under some conditions may be some other colour.


Alcala de Guadaira school

The Alcala de Guadaira school refers to the circle of painters, initially brought together by Manuel Ussel de Guimbarda, but which revolved around Emilio Sanchez Perrier after approximately 1890. The group assembled and painted en plein air on the banks of the Guadaira, near Seville.



Aleatoricism, the noun associated with the adjectival aleatory is a term popularised by the musical composer Pierre Boulez, but also Witold Lutoslawski and Franco Evangelisti, for compositions resulting from "actions made by chance", with its etymology deriving from alea, Latin word for "dice". It now applies more broadly to art created as a result of such a chance-determined process. The term was first used "in the context of electro-acoustics and information theory" to describe "a course of sound events that is determined in its framework and flexible in detail", by Belgian-German physic ...



Anamorphosis is a distorted projection or perspective requiring the viewer to occupy a specific vantage point, use special devices or both to view a recognizable image. Some of the media it is used in are painting, photography, sculpture and installation, toys, and film special effects. The word "anamorphosis" is derived from the Greek prefix ana‑, meaning "back" or "again", and the word morphe, meaning "shape" or "form". An optical anamorphism is the visualization of a mathematical operation called an affine transformation. The process of extreme anamorphosis has been used by artists to d ...



An anthotype is an image created using photosensitive material from plants. This process was originally invented by Sir John Herschel in 1842. An emulsion is made from crushed flower petals or any other light-sensitive plant, fruit or vegetable. A coated sheet of paper is then dried. Place some material, for example leaves or a transparent photo positive on the paper and expose to direct full sunlight until the image part not covered by the material is bleached out by the sun rays. The color remains in the shadowed parts. The paper remains sensitive against such rays.


Appropriation (art)

Appropriation in art is the use of pre-existing objects or images with little or no transformation applied to them. The use of appropriation has played a significant role in the history of the arts. In the visual arts, to appropriate means to properly adopt, borrow, recycle or sample aspects of human-made visual culture. Notable in this respect are the Readymades of Marcel Duchamp. Inherent in our understanding of appropriation is the concept that the new work re contextualizes whatever it borrows to create the new work. In most cases the original thing remains accessible as the original, ...