rastor vs. vector graphics
TRANSCRIPT
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RASTER VS. VECTOR
GRAPHICS
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Characteristics of RASTER graphics
Made up of PIXELS (small squares of color).
Also known as Bitmap graphics.
Resolution Dependent - raster graphics have jagged edges.
Raster graphics can look blurry, jagged, and “pixelated” when enlarged.
Common raster file types:
jpeg (Joint Photographic Experts Group)
bmp (Bit-Map graphics)
gif (Graphics Interchange Format)
psd (Photoshop Document)
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Characteristics of VECTOR
graphics Vector graphics use mathematical formulas which define
geometrical shapes like lines, curves, objects, arcs, etc.
Vector graphics are not made of pixels.
Vector graphics have smooth edges.
Resolution Independent- Vector graphics retain their clean, smooth edges when enlarged as they are scalable.
Common vector file types –
eps (Encapsulated Post Script),
ai (Adobe Illustrator)
swf (Shockwave Flash – Small Web Format)
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Recap: Raster vs. Vector
Pixels
Quality dependent
Jagged edges
Blurry, jagged, and
“pixelated” when
enlarged
.psd, .jpg, .bmp, .gif
RASTER GRAPHICS VECTOR GRAPHICS
Mathematical formulas
Quality Independent
Smooth edges
Clean and smooth when
enlarged
.ai, .swf, .eps,
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Letter “a” represented as a
Raster graphic
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Letter a represented as a
Vector graphic
Myriad Pro True Type font shown in the
example
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Raster image enlarged
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Vector artwork enlarged
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Introduction to
ADOBE ILLUSTRATOR
Q. WHAT IS ILLUSTRATOR USED FOR?
Illustrations, logos, drawings, billboard
artwork, banners, text, etc.
Q. WHAT IS THE NATIVE FILE FORMAT
FOR ILLUSTRATOR?
.ai (Adobe Illustrator)
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Q. WHAT TYPE OF GRAPHICS ARE CREATED IN ILLUSTRATOR?
Vector graphics
Q. CAN ILLUSTRATOR GRAPHICS BE ENLARGED WITHOUT LOOKING BLURRY?
Yes! Since they are vector graphics they retain their smooth lines even when enlarged
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ALWAYS CHANGE YOUR GENERAL UNITS FROM POINTS TO INCHES WHEN STARTING AN ILLUSTRATOR PROJECT:
1. Illustrator menu ->Preferences -> Units
2. Change General Units to Inches
3. Leave the other ones in Points
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Q. What is the preferred file format for printing
Illustrator files?
pdf (portable document format)
You can go to File->Save As->pdf
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Raster or Vector?
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Raster or Vector?
VECTOR
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Raster or Vector?
VECTOR