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Vector Artwork: Artwork that stores mathematical information about shapes and lines is called
vectors. They can be scaled easily without producing the "stair-step" edges you will
see in pixel-based (raster) images. They adapt to the resolution of any output device
and are considered to be resolution independent. They are produced
by programs like Adobe Illustrator®, Macromedia FreeHand® and CorelDRAW®.
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Raster Artwork: Artwork and images that are defined by a checkerboard pattern,
similar to viewing mosaic tiles. Raster images are limited by the number of pixels and
cannot be enlarged without producing noticeably jagged, stair-stepped edges. They
are produced by digital cameras, scanners, and can also be created by programs like
Adobe PhotoShop and CorelPHOTO-PAINT (among others).
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Spot Color: Solid, generally flat fields of color. Used for silk screening
where a printer can lay down several solid areas of color to produce multi-colored
artwork; also used to identify additional colors in a four-color process file
or print job.
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Color Space: Refers to the use of color in an imprint or graphic file. Defined
for our purposes as spot color, no color, RGB or CMYK.
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RGB: Colors defined as a combination of three colors red, green and
blue to produce millions of other colors.
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CMYK: Colors defined using a combination of four colors cyan,
magenta, yellow and black to produce millions of other colors; often
refered to as four-color process.
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Resolution: The measurement of quality (pixel per inch in file or dots
per inch in output). Low-resolution images
may be as low as 72 dpi (or less). High-resolution images may be as high as
600 dpi (or more).
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