quiz 2, computer design

Scanning basics:

1) Check your settings 2) Resolution - select the appropriate resolution for your image at final size - 100% at 72 ppi for web 100% at 300 ppi for print 3) Click on Overview/Preview 4) Scan 5) Save to your desired location

Types of Scanners:

1)Drum scanner 2) Flat-bed scanner 3) Handheld scanner

Laser:

A type of printer that utilizes a laser beam to produce an image on a drum.

Ink-jet:

A type of printer that works by spraying ionized ink at a sheet of paper.

RGB:

Abbreviation for red, green, blue, the additive color primaries.

Spot Color:

As an alternative to breaking a color down into four process inks a specific hue can be isolated and printed using a specific ink matching that hue. In traditional printing the spot color would be separated out from other inks / color and printed using its own printing plate and specific ink.

Subtractive Color:

Color produced by light reflected from a surface.

WEB:

Gives RGB formulated color system.

File Extensions (tag):

Identify the type of file format for operating systems, application and users. ex: Tiff, tif - print, Bmp, Jpg - Web, Jpg(2000) - Web, Gif - Web, Png - Web, Psd

Value:

Indicates the darkness or lightness of a hue. Also called brightness, lightness, shade and tone. Blue has a darker value than yellow.

Pantone Matching System (PMS):

Is a propriety color system that is used as a standard color reference for the printing industry. PMS includes both spot and process colors

Compression:

Is the process of rearranging data to take up less space.

Hue:

Is the wavelength of light reflected from or transmitted through an object. More commonly, hue is identified by the name of the color, such as orange, pink or green.

jpg:

Joint Photographic Experts Group (JPEG) format is commonly used to display photographs and other continuous-tone images in hypertext markup language (HTML) documents over the World Wide Web and other online services.

Lossless:

Lossless compression reduces a file's size with no loss of quality.

Lossy:

Lossy compression throws away data based on parameters set by the compression format. Once thrown away the data cannot be retrieved. This can translate to the degeneration of an image. Jpeg file format uses Lossy compression

Chroma:

Strength or brightness of a color as it moves away from neutral gray. Also called depth, intensity, purity and saturation- the purity of a color, or its freedom from white or gray.

tif:

Tagged Image File Format (TIFF, TIF) is used to exchange files between applications and computer platforms.

Color Gamut:

The describes entire range of colors achievable by a single device, such as a computer screen, or system, such as four-color process printing.

Spectrum:

The series of colors that results when normal white light is dispersed into its component parts by refraction through a prism. Commonly used to refer to possible range of color.

PANTONE:

Used for printing inks. Each PANTONE color has a specified CMYK equivalent. To select a PANTONE color, first determine the ink color you want, using either the PANTONE Color Formula Guide or a ink chart obtained from your printer. PANTONE books are available from PANTONE's Web site.

Subtractive Primary Color:

Yellow, magenta and cyan.

Additive Color:

created by use of lights such as in back lit computer monitors, LED television screens and stage lighting. The three additive colors are red, green, and blue (light)

Three primary colors used:

cyan (process blue), magenta (process red), and yellow.

Resolution:

determines the sharpness/clarity of an image on film, paper, computer screen, disc, tape or other medium. The number of pixels or dots (dpi), spot (spi), lines per inch (lpi) of an image.

Process color printing, also known as four-color process printing,

is a method that reproduces finished full-color artwork and photographs.

Saturation:

refers to the vividness or dullness of the hue. Low saturation is closer to white and colors in that range are called Tints. High saturation has a lot of one particular Hue, are very chromatic or intense, and we call colors in that range Shades.

"K" in CMYK is black:

used to create fine detail and strong shadows.

Grayscale:

uses different shades of gray in an image. In 8‑bit images, there can be up to 256 shades of gray. Every pixel of a grayscale image has a brightness value ranging from 0 (black) to 255 (white). also be measured as percentages of black ink coverage (0% is equal to white, 100% to black)