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» Home » Graphics Vector
& Bitmap Images: Which is Best? Vector Vector artwork is prepared in a vector-drawing program (makes sense) and is based on PostScript code. A designer "plots" vector points and the points are connected with straight or curved lines. The shapes can then can be filled with a color, a gradient, a pattern or nothing at all. If a designer prepares a logo or drawing in Illustrator or Freehand, then the image is probably a vector image. A great thing about vector drawings is that they can be edited somewhat easily by moving vector anchor points in a vector-drawing program. The best thing is that no matter if the image is 1" wide, 1,000" wide or even 1 mile wide, the image will not lose any clarity. Because a vector image uses PostScript code, the image scales perfectly. However, because of the dependency on Postscript, vector images will not print well on printers that are not PostScript enabled. Bitmap Bitmap artwork is either scanned or created in an image-editing program like Photoshop. If someone gives a designer a photo file, it's bitmap image. A piece of line-art could be a vector image or could be a bitmap image. One needs to be very aware of the resolution and the size of bitmap images. An image of 72 dots-per-inch (dpi) may look just fine on-screen but 72dpi is not sufficient resolution for printing. A photo file of 300dpi is sufficient to print at 100% but, at 300%, all of the pixels in the image are also be enlarged. Rather than small little pixels, that fool the eye into seeing one continuous tone photo, one would see large pixel squares that look blotchy. The bottom line? In the case of line art or illustrations, a designer
should try to obtain or create it as a vector image whenever possible.
They will make life a lot easier if art needs to be resized. If it's a
photograph, a designer doesn't have a choice. They're all bitmap images.
They should just be sure to take into consideration the maximum size that
the artwork will be used.
 Some
Links You May Find Useful
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designer
will come into contact with two kinds of computer image files. They may
look the same but upon closer inspection, one finds that they are quite
different in many ways.
