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Adobe Illustrator - Understanding Vector Graphics
This document gives you a template on how to Learn what a vector graphic is and how it can help develop more versatile graphics.
Vector vs Raster graphics
The main advantage of Adobe Illustrator, and one of the things that differentiates it from other design software, is that it is a vector-based image editing program. In traditional image editing applications like Photoshop, images are limited in terms of the output size or quality, based on the number of pixels or resolution that reside inside of an image. This means there must be a constant awareness of the DPI or PPI settings of a document, because the files are resolution dependent. Anything created inside Illustrator is a vector object, and this type of graphic is resolution independent, meaning that it will be just as sharp and clean at 3 inches or 300 feet.
Illustrator is often used to create vector based graphics and then output it to applications like Adobe InDesign and use that for output on things like business cards or letterhead, and the artwork maintains its vector nature all the way through the process. It is always going to look crisp and clean, whereas a raster-based image will degrade with scaling.
When to use Vectors
Raster images, like photographs for example, have great color detail, but can’t enlarge without becoming blurry. Vectors are typically fonts or logos. They have the ability to enlarge without losing quality, but have limited color detail.
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