Glossary to Accompany Color Drawing, Third Edition

Glossary to accompany Color Drawing, Third Edition

by Michael E. Doyle

adjustment layer A layer that adjusts the color of only the layers beneath it in a Photoshop file. The adjustment controls of an adjustment layer can be reopened and the layer readjusted.

aerial perspective A view from above, created by making a drawing below its horizon line. This kind of perspective is also known as a “bird’s-eye perspective” (see also atmospheric perspective).

afterimageThe imagery seen floating before one’s eyes after the stimulus has been withdrawn.

analogous hues Hues related to one another owing to their side-by side relation ship on the color wheel.

aniline dye The dye used as the colorant in markers. Aniline dye is sensitive to ultraviolet light, and drawings using markers should be archived by color slides. If such a drawing is to be displayed, make a color bubble-jet photocopy for display purposes and store the original in a dark place.

atmospheric perspective The pronounced illusion of distance caused by the progressive changes in colors as they recede in space. Generally, colors become weaker in chroma, higher in value, and shift in hue toward the purple and purple-blue range. Artists sometimes call this effect “aerial perspective.”

background (of a drawing) The part of a drawing that occurs behind the center of interest.

balanceThe quality of a drawing whereby its various parts appear to be in proper proportion to one another.

base, marker base The initial application of color to a drawing, often made with marker.

blending mode In Photoshop’s Layers Palette, the blending mode is the drop-down options bar located on the upper left. You will usually see it set on “Normal.” It controls how a painting or editing tool affects the pixels in an image. One of its most useful modes for color drawing is “Multiply.” When a line drawing is imported as a layer on top of a Photoshop image, using the “Multiply” mode makes all but the lines of the drawing transparent. The result is that the drawing looks like part of the underlying Photoshop image.

bond paper An inexpensive white paper used in most black-and-white photocopiers. Use 24 lb. or heavier bond paper for color drawings if possible.

brillianceAnother word for the chroma of a color, also called “intensity,” “saturation,” or “purity.”

Bristol paper A high-quality white paper often used for presentation-quality color drawings. This paper has excellent tooth and shows marker, color pencil, and pastel very well. The two-ply “vellum” finish is the best to use for the types of drawing shown in this book and easily takes a black-and-white photocopy image.

Brush Tool A tool in Photoshop that uses the foreground color in the Color Picker to apply soft-edged strokes to an image. A variety of brush types can be found in the Brushes Palette. An airbrush capability is available in the options bar.

Canson paper A high-quality textured drawing paper that shows marker, color pencil, and pastel well. It can also receive images from a photocopier, although it may need to be sprayed with a fixative such as Krylon Crystal Clear spray acrylic, as the toner from the photocopier may not completely fuse to the paper because of its texture. Canson is part of the Mi-Tienes line of paper made by Canson-Talens.

Character Palette A palette found on the options bar when the Type Tool is selected in Photoshop. This palette allows the user to customize a variety of text attributes.

chiaroscuroThe light-to-dark shading of an illustrated form, used to make it appear three-dimensional.

chromaThe strength of a color, which can range from weak (almost gray) to strong (pure). Other names for chroma include “saturation,” “purity,” “brilliance,” and “intensity.”

Clone Stamp Tool A tool that allows the user to copy one area of a Photoshop image into another, using a selected brush.

Color Picker In Photoshop, enables the selection and customization of a color for use with the editing tools.

color wheel A circular arrangement of hues based on the side-by-side relationship of colors seen in visible light when it is refracted. The circular arrangement is useful to designers and artists because it makes the relationships between the hues more readily visible.

complementary hues Hues that are diametrically opposite each other on the color wheel. When these hues are placed side by side, each makes the other appear its most intense.

compositionAn arrangement of elements intended to be seen together, as a whole.

contrastA perceivable difference between two parts of the same color dimension. This difference can range from subtle to strong.

cool gray A gray that is very slightly bluish.

cool hue, cool color A hue or color that is associated with cool temperatures. Blue green, blue, purple blue, and purple are the cool hues on the Munsell color wheel (see figure 6-2). Green and red purple form the border between the warm and cool colors on the color wheel and can be made to be either warm or cool.

Crop Tool A Photoshop tool that uses adjustable boundaries to allow the user to trim the edges of an image.

design drawing Exploratory drawing used to manifest early design ideas for oneself and to communicate those ideas to others.

design mind That part of one’s mind that is thinking ahead to the design implications of what one is drawing and, usually, making adjustments in the drawing accordingly. Likewise, drawing an idea may also require making corresponding adjustments to the design.

diffuse shadow edge A shadow edge that gradually changes from shadow to light and forms no distinct boundary.

dimension of color A perceivable, measurable quality of a color. A color has three dimensions—hue, value, and chroma—and each may be theoretically altered without affecting the others.

distinct shadow edge A shadow edge that forms a distinct boundary between shadow and light.

document window The main image window in Photoshop. While more than one document window may be open, the active window is always in the foreground.

dominant, dominance Relates to that which perceptibly occupies most of the area in a drawing; usually used in reference to the presence of a particular dimension of color in a composition.

dpi, dots per inch The number of pixels per linear inch in a digital image. The more dots per inch an image has, the higher its resolution. A holdover term from nondigital printing, “dots per inch” and “pixels per inch (ppi) are terms that are now usually used interchangeably.

entourageElements that are added to a design drawing, such as figures and automobiles, that help give the drawing scale and context.

Eraser Tool A tol used to erase or delete pixels in a Photoshop image.

even wash A coating of color, usually by color pencil, that does not vary over the area to which it is applied.

extensionThe overcrossing of lines that form a corner in a drawing. Line extension can help to visually strengthen the corners of forms and shapes.

eyeball perspective Perspective drawing without the aid of perspective measuring systems or devices. Eyeball perspective is an extremely useful design drawing tool that, once mastered through practice, allows the designer to visualize three-dimensional forms and spaces by estimation.

Eyedropper Tool A tool used to sample a color from an image in Photoshop. The sampled color becomes the foreground color in the toolbox’s Color Picker.

fixativeA sprayed coating that helps to keep powdery color media, such as pastel, from smearing. Fixatives should be used with care, as they can somewhat deaden the brilliance of pastels.

flavoringA wash that imparts only a subtle hint of color, usually with color pencil.

forcing the shadow The act of grading a shadow darker toward its boundary, so the illuminated surface next to it appears brighter by contrast. This term also includes the converse, whereby an illuminated surface is made lighter next to a shadow.

foregroundThat part of a drawing that lies in front of the center of interest. Foreground elements are often used compositionally to make the middle ground appear more luminous and to help “frame” the center of interest.

French gray Grays that are very slightly yellowish or yellow reddish.

Golden Mean A guide to proportional relationships between two parts of a thing, developed by the Greeks, whereby the relationship of the smaller part to the larger part is the same as the larger part’s relationship to the whole.

gouacheAn opaque watercolor paint.

gradationA gradual change in the dimensions of color over a given surface. A gradation can occur in one, two, or all three dimensions of a surface’s color simultaneously.

graded wash A wash of color, applied with marker, pencil, or pastel, whose dimensions are made to change over a given surface.

gradientThe blend or transition of one color or value into another.

Gradient Tool A tool used to create a blend of two or more colors within a selected area of a Photoshop image. The Gradient Editor in the options bar allows you to control the extent and graduation of the gradient.

grainThe texture of a paper, also known as its “tooth.” A fine-grain paper, such as Bristol, has less apparent “tooth” than a coarse-grain paper, such as Canson.

highlightThe lightest spot or area of a surface, usually created by a light source or specular reflection.

histogramA graph of the value range of your image found when you open the Levels Adjustment command in Photoshop. It is divided into 256 levels, ranging from pure black at level 0 on the left, to pure white at level 255 on the right. The vertical range shows how many pixels are at each value.

History Palette A palette in Photoshop that tracks the steps used to create an image.

hueThe name of a color and one of its three dimensions.

hue chart A chart of orderly samplings of a hue that displays its range of value and chroma. The extent of the ranges depends on the color medium used.

hue scheme A set of hues intended for a composition that are chosen for their particular relationship on the color wheel.

hybrid drawing A drawing created using both hand and digital techniques.

indistinct shadow edge See diffuse shadow edge.

illuminationA term used in this book to describe lighting effects that come from sources of light other than direct sunlight. An interior is usually illuminated by a variety of light sources, including reflected sunlight.

keyA closely related group of values that dominate the colors of a composition. Light values dominate a “high-key” composition, and dark values dominate a “low-key” composition.

Lasso Selection Tool A tool used to create free-form selections in Photoshop.

Layers Palette A Photoshop palette that allows the user to keep track of the layers used to create an image. It can create, hide, merge, duplicate, link, lock, and delete layers. Adjustment layers and layer styles (drop shadows, etc.) can be generated from this palette. It can also control the blending mode and the opacity of a layer.

lightnessThe degree to which the value of a color approaches white.

line control Disciplined movement and the use of the line media characteristic of hand-drawn linework.

line quality The character of linework in a drawing, usually used in reference to hand-drawn lines. Good line quality can include line control, an intelligent use of line weights, extensions, and line snap. It also can provide a window into the attitudes and characteristics of the designer.

line snap A slight darkening of the end of a handdrawn line, often used to emphasize the intersection of lines at corners of shapes.

Line Tool A tool used to create straight lines in Photoshop. The selection of line weight and arrowheads occurs in the options bar.

line weight A line’s degree of darkness and thickness.

local tone The inherent value of an object, regardless of its illumination.

lowlightsSmall areas of shade, shadow, or very dark reflection on an object that usually also contain highlights.

luminosityThe appearance of giving off light.

Magic Wand Tool A Photoshop tool used to quickly select areas of similar colors.

markerA color application device that has a chiselshaped tip made of an absorbent proprietary plastic. The coloring medium is composed of a carrier and a dye. The carrier is either alcohol or xylene, and the colorant is aniline dye. The colors are transparent and dry very quickly upon application.

Marquee Selection Tools Tools that allow the easy selection of orthogonal, circular, and elliptical shapes in a Photoshop image.

Measure Tool Used to measure distances and angles in a Photoshop image. The readouts can be found either in the options bar or on the Info Palette.

medial mixture The color created as the result of a visual averaging or mixing of several separate colors.

menu bar Contains all of the menus available in Photoshop. It is located at the very top of the Photoshop window.

minglingCreating a mixture of different colors in which each color retains some of its original identity. Mingling is often used in watercolor illustrations, and similar effects can be achieved with markers, with color pencils, and with pastels.

monochromaticHaving or consisting of a single hue. In a monochromatic hue scheme, the dimensions of value and chroma may vary, but only one hue is used.

Move Tool A tool that allows you to move a layer or selection in a Photoshop file by clicking and dragging with your pen-tablet pen or mouse.

Munsell Student Charts A series of 10 hue charts and a chart containing the Munsell color wheel, a value scale, and a sample chroma scale. These charts are useful references for color composition work and can be obtained from Fairchild Books, 7 West 34th Street, New York, NY 10001; (800) 932-4724. They can also be ordered from Amazon.com.

Munsell System of Color A system in which color is organized visually rather than according to the mixture of pigments or dyes. It was originated by Albert H. Munsell in 1898, and the Munsell Color Company was formed shortly before his death in 1918. This system, like all color systems, originated from the need to describe colors in definite terms.

Navigator Palette A Photoshop palette that can be used to quickly show any part of an enlarged image in the document window by moving an outline of the document window over a thumbnail image of the document. This palette also includes a slider for enlarging or reducing the image.

neutral color A color that has no hue or chroma; white, black, and the grays.

Office Method, Common Method (of perspective drawing) A once-popular method of two-pointperspective construction that utilized a plan andelevation to construct a perspective view. The methodused the intersection of imaginary lines with a “pictureplane” drawn from a station point to corners of theplan view. Additional lines were extended from thisintersection to form the vertical corners of the three dimensionalimage. The elevation was used to providethe necessary height information.

Opacity slider A slider in the Photoshop Layers Palette that controls the degree of a layer’s opacity, rangingfrom completely opaque to completely transparent.

options bar A strip exhibiting controls that can be used to modify an active tool in Photoshop. The options bar is located directly beneath the menu bar.

Paint Bucket Tool Used to fill a selected area in a Photoshop file with the foreground color shown in the Color Picker.

paletteA selection of colors used for a particular purpose or series of similar purposes.

paraline drawing A drawing that uses parallel lines to create three-dimensional images. Isometric, dimetric, axonometric, and oblique drawings are all types of paraline drawing.

pastelA color stick made by combining dry pigment with a methylcellulose binder.

pastel “quickie” A color drawing created very quickly with the use of pastel.

pen and pen tablet A digital device that can be used to control the movement of the cursor on the computer screen instead of a mouse. It is especially useful when using Photoshop and other digital drawing applications because it approximates the shape and feel of a pencil and paper; it is therefore more comfortable than a mouse, and affords more precision, facility, and pressure sensitivity when drawing.

Pencil Tool Used for drawing hard-edged lines in Photoshop. The width and character of the line can be controlled using the settings on the options bar, including the Brush Preset Picker.

perspectiveThe representation of a three-dimensional form or space on a two-dimensional surface. It came into use in the fourteenth century.

plotterA color printing device, which can be connected to a single computer or network, that is used to generate large-format prints, usually on paper.

poché(n.) The shading of that part of an architectural drawing representing a section cut; (v.) to shade a

section cut, usually with pencil or pen.