Bitmap Art vs. Vector Line Art
About vector graphics –
Vector graphics are made up of lines and curves defined by mathematical objects called vectors. Vectors describe an image according to its geometric characteristics. You can move, resize, or change the color of vector graphics without losing the quality of the graphic. Vector graphics are resolution-independent–that is, they can be scaled to any size and printed at any resolution without losing detail or clarity. As a result, vector graphics are the best choice for representing graphics that must retain crisp lines when scaled to various sizes–for example, logos.
About bitmap images –
Bitmap images–technically called raster images–use a grid of small squares known as pixels to represent images. Each pixel is assigned a specific location and color value. For example, a bitmap image is made up of a mosaic of pixels that give the appearance of the image. When working with bitmap images, you edit pixels rather than objects or shapes. Bitmap images are the most common electronic medium for continuous-tone images, such as photographs or digital paintings, because they can represent subtle gradations of shades and color. Bitmap images are resolution-dependent–that is, they contain a fixed number of pixels. As a result, they can lose detail and appear jagged if they are scaled on-screen or if they are printed at a lower resolution than they were created for.
There are times where a bitmap would be acceptable and that would be when the bitmap is a very high resolution of 600dpi or larger AND the art is in black and is the actual size it needs to be for the item it is going on with the exception of text. Text tends to print blurry or unclear, even if it is a high res. bitmap. Bitmaps would need to be discussed and approved prior to production. There will still be a clarity issue with any bitmap.