A sharpened pencil in extreme perspective. A pencil is a Writing or Drawing instrument consisting of a thin stick of Pigment (usually Graphite, but can also be coloured pigment or Note the shallow depth of field. In Optics, particularly as it relates to Film and Photography, the depth of field (DOF is the portion of a scene that appears sharp in the image

Perspective, in context of vision and visual perception, is the way in which objects appear to the eye based on their spatial attributes, or their dimensions and the position of the eye relative to the objects. The visual system is the part of the Nervous system which allows organisms to see. In Psychology, visual perception is the ability to interpret information from Visible light reaching the Eyes The resulting Perception is also Eyes are organs that detect Light, and send signals along the Optic nerve to the visual areas of the brain Space is the extent within which Matter is physically extended and objects and Events have positions relative to one another In mathematics the dimension of a Space is roughly defined as the minimum number of Coordinates needed to specify every point within it There are two main meanings of the term:

# Linear Perspective

As objects become more distant, they appear smaller, because their angular diameter (visual angle) decreases. Perspective (from Latin perspicere to see through in the graphic arts such as drawing is an approximate representation on a flat surface (such as paper of an image as it is perceived 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 The angular diameter of an object as seen from a given position is the "visual diameter" of the object measured as an angle The visual angle is the angle a viewed object subtends at the eye usually stated in degrees of arc The visual angle of an object is the angle subtended at the eye by a triangle with the object at its base. A triangle is one of the basic Shapes of Geometry: a Polygon with three corners or vertices and three sides or edges which are Line The further the height of this triangle, the distance of the object from the eye, the less the visual angle. This follows simply from Euclidean geometry. Euclidean geometry is a mathematical system attributed to the Greek Mathematician Euclid of Alexandria. [1]

The Sun and the Moon appear to be roughly the same size because the Sun, although much, much larger, is also much farther away. The Sun (Sol is the Star at the center of the Solar System. The relationship between distance and apparent height of objects is not a linear pattern. If an object were actually touching the eye, thus being no distance away, it would appear infinitely tall.

Perspective is also seen in the way the parallel lines of how railway tracks appear to be meeting at a distant point (the vanishing point) on the horizon. A vanishing point is a point in a perspective drawing to which Parallel lines appear to converge When used in this sense, the 'horizon' is always at the level of the viewer's eye. Because the Earth is round, the true horizon (the line dividing the surface and the sky) is lower than this level. The difference is imperceptibly small when standing on the surface, but noticeable from great height (a person standing on a mountain can see further than someone at ground level). See horizon. The horizon ( Ancient Greek ὁ ὁρίζων, /ho horídzôn/ from ὁρίζειν, "to limit" is the apparent line that separates

In graphic representation, an artist uses intuitive, artistic, scientific, or technical skills to represent the phenomenon of the visual perception of perspective. Graphics (from Greek grc [[wiktγραφικός γραφικός]] see -graphy) are Visual presentations on some surface such as a wall Representation describes the signs that stand in for and take the place of something else In simpler terms, these skills are used to add a suggestion of depth to what is ultimately a flat image or drawing. See Perspective (graphical). Perspective (from Latin perspicere to see through in the graphic arts such as drawing is an approximate representation on a flat surface (such as paper of an image as it is perceived

Forced perspective can be used to deliberately misrepresent an object's size, making something appear larger or smaller than it really is. Forced perspective is a technique that employs Optical illusion to make an object appear farther closer larger or smaller than it actually is This is common in film, where a distant castle in the background may in fact only be a cardboard model a few feet high (and much closer to the camera). A camera is a device used to capture images either as still Photographs or as sequences of moving images ( Movies or Videos. These are forms of optical illusions. This article is about visual perception See Optical Illusion (Album for information about the Time Requiem album

## Film, television, and computer/video gaming

• Perspective in film, television, and computer and video games can include first-person view, third-person view, and other camera field of view effects. Television ( TV) is a widely used Telecommunication medium for sending ( Broadcasting) and receiving moving Images, either monochromatic A video game is a Game that involves interaction with a User interface to generate visual feedback on a video device. See also First person First-person narrative is a Narrative mode in which a Story is narrated by one character, who explicitly The field of view (also field of vision) is the angular extent of the observable world that is seen at any given moment

# Aerial Perspective

Aerial perspective refers to the effect on the appearance of an ordinary object (i. 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 e. , other than a self-luminous object by being viewed through the atmosphere. An atmosphere (from Greek ατμός - atmos, " Vapor " + σφαίρα - sphaira, " Sphere " In daylight, as an ordinary object gets further from the eye, its contrast with the background is reduced, its colour saturation is reduced, and its colour becomes more blue.