What is the difference in vector and raster art?
Vector images (illustrator, freehand, corel draw) are graphics files that are made up of a set of mathematical points stored by their position on a grid. Because vector files are mathematical the images can be changed in size infinitely and maintain their integrity. Raster images (photoshop, jpeg, bmp, png, etc) are made up of pixels. When raster images are enlarged in size, the pixels get larger and their edges become jagged and uneven. While raster images can be stored at very high dpi (dots per inch) in order to allow them to be blown up, they may not be increased in size infinitely and are thus much less useful in design applications. Most raster images can not be blown up much bigger than you see them on screen before they begin to pixilate. For purposes of promotional products raster images often have to be recreated to vector art to ensure the best quality. Enlarge your image and print it out to see if the edges are crisp, clean and sharp.
