"All diseases run into one, old age."Ralph Waldo Emerson
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Extending the Life of Your Business or Personal Computer Printer
Among the components of a PC system, the printer is the last in the list of parts for upgrade and even for cleaning. This, however, should not be the case. Without a printer, one cannot produce hard copies of important documents. While printers do not ...
How To Find Tech Support For Your Computer Printers
Computers are becoming commonplace in homes and offices around the world. The problem is that most people know so very little about their computers, that when something goes wrong, they do not know how to begin the troubleshooting process. The ugly truth ...
Questions To Answer Before Buying That New Computer Monitor
Aesthetics and display size are important when purchasing a new computer monitor, but here are some more very important questions to ask. What are you useing your new computer monitor for? You should think about what type of work you will be doing on ...
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Graphic images on your computer come in two different forms, raster images and vector images. Raster images are made by programs such as Photoshop and Corel Photopaint. Vector images are produced by Adobe Illustrator, Freehand, and CorelDraw. While the results from these different programs can look similar, the ways in which they are made are very different.
Raster images are made up of millions of individual squares, or pixels, of various colors. The more pixels you have, the better the image will look. The number of pixels, or resolution, is usually expressed in dots per inch (dpi). Images on the Web are shown at 72 dpi. A high-resolution image would run 300 dpi or higher. Some types of printing can get into the 1600 dpi range. Much like a mosaic, a raster image can look smooth from a distance but as you zoom in closer you can see the individual pixels.
A vector image is drawn from mathematical formulas for lines and curves and is redrawn each time you zoom in for a closer look. The quality of the image stays the same regardless of the level of magnification. Vector files, since they are formulas instead of information on millions of individual pixels, tend to use less memory than raster files.
The edge of a circle, rendered as a raster image, may look smooth initially, but eventually as you zoom in you will see a jagged stairstep edge of the individual square pixels that make up the image. A lower resolution image will look jagged or pixellated much sooner than a high resolution image. A circle's edge in vector form will always be smooth no matter how close you zoom in since it is recalculated each time you change the view.
Raster based programs are best at working with photo-realistic images and make subtle (or bold) changes in color, shadow and texture. Vector based programs excel at easy control of edges and tend to produce a more graphic style of art. Regardless of the type of image, higher resolution is always better for producing a good result. While your image may be vector or raster, or even a combination of the two, the Art Staff at ExpertShirt.com will work hard to translate it into the best textile printing possible.
About the Author
Mandar is a graphic artist and man-about-town with Expertshirt.com. Design your own custom tshirt online at http://www.expertshirt.com
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