Value
Three dimensional form becomes apparent through the play of light and shadow,
represented by shading. Line adequately represents the contours of an object, subjects as
a rule display characterists and suggests mood that can not be describled by contour
alone.
Value clarify and enrich space defined by simple line in 5 ways:
A. Value denotes degrees of light and dark. White under brilliant illumination is
the lighted possible value; black in shadow the darkest in between occurs a range of
intermediate grays.
B. The degree of value contracts determines the placement and relations of form
in space. Forms can be made to advance or recede through the degree of value contrast
employed.
C. Value provides a fundemental elements for creating pattern for modulating
and describing surface texture.
D. The pervasive mood of a drawing---dark and ominous, light and cheerful---
derives from the artists emphasis on tones at either end of the value scale.
E. Value contrast convey dramatic power. Strong contrast of light and dark for
example can be manipulated to create points of accent in a composition and so draw
attention to areas in terms of their importance.
Value can be produced in two ways. Hatching and Depositing actual grey tone by
chalk, pencil, diluted ink.
Learning to see relationships of value is essential to producing convincing visual
images. The full range of values that exists in nature cannot be duplicated, which means
that an artist can only approximate the effect of natural light.
Perception of value depends upon a number of factor:
1. the actual coloration of the subject
2. its lightness or darkness relative to its surroundings
3. the degree to which the subject is illuminated or in shadow.
Form and Space
Space is understood as the negative aspect, or complement or form. Space like
form is defined by light, which artists re-create in terms of value. Value not only
defines objects, it also places and separates forms in space.
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Artist- Diebenkorn.
Pattern
Pattern is often used in reference to all of the individual shapes, defined by
changes of value, which combine to construct form and space. The Diebenkorn drawing
was described as ‘simplified patterns of light and dark.’
Texture
Choice of value and manner of application are important in creating the illusion of
different textures and surfaces. Value permits the depiction of characteristics that cannot
be described by line alone,