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File Preparation
Fonts:
Color: Although you may not be able to see the difference between an image in the CMYK color mode and an image in the RGB color mode on screen, there is quite a difference. Colors from the RGB color space can cover a greater range of the visual spectrum (that is, they have a larger color gamut) than those in the CMYK color space. For the same image dimensions, a CMYK image has a larger file size than an RGB image. As there are more RGB colors than can be reproduced in the CMYK color system, RGB colors outside the CMYK gamut are replaced with the closest CMYK match available. Most scanned photographs contain RGB colors that are within the CMYK gamut, and all the colors are converted to CMYK with little or no substitution. Images that were created or altered digitally, however, often contain colors that are out of gamut. You may notice a significant difference in appearance when you convert these images to CMYK. Although we will convert all images from RGB to CMYK, we highly recommend that you make the conversion yourself before sending us the files so that you have a chance to view the difference the conversion makes on your monitor.
Vector vs. Raster Images: Vector drawings are defined mathematically. They are resolution-independent, so they can be scaled to any size with absolutely no loss of quality. Raster or bitmapped images are defined by their pixel resolution, so they cannot be scaled to larger output size without loss of resolution. As a rule of thumb, a raster image will lose resolution proportionally to its increase in size. If you provide us a 10"x10" image with a resolution of 300 dpi, and want to output that same image at 20"x20", that image will output at 150 dpi. This formula must always be considered when creating your final file.
Saving Your Files:
Adobe Illustrator
Adobe Photoshop |
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Sign-A-Rama 4200 Wisconsin Ave NW Suite 107 Washington, DC 20016 202-244-9171 © 2005 Creative Signs & Graphics, LLC DBA Sign-A-Rama, Washington DC |