Nancy;
Very useful info. If you don't mind, can I add a few more?
6. RGB. This is another color mode in addition to CMYK mentioned above. RGB stands for Red, Green, & Blue. The reason it's important is that some devices are CMYK (like offset presses that belt out brochures) and other devices are RGB (inkjet printers). You can design your graphics in either CMYK or RGB and you can even convert back & forth. BUT... the conversion will often introduce color shifts. So to be safe, design your business cards & brochures in CMYK. Design your vinyl banner, poster, backlit display, etc. to be produced on a large-format inkjet printer in RGB.
7. Resolution. The web is so great. You can just copy & paste a cool graphic from someone's website into your 4' x 10' banner. ERRRRRR..... nope (never mind the legality issue). Graphics small enough to load quickly on the web will be too low in resolution (pixels per inch (ppi) ) to be blown up to poster or banner size. Nothing worse for a print provider like me than to get a 72 ppi image at 1" x 2" and be asked to make it a 2' x 4' poster.
8. BITMAP v. VECTOR. Wow, really getting deep now.... Bitmap images are made up of pixels (little dots of color). Vector images are made up of equations that define things like lines, area fills, etc. That's important because those vector images can be scaled up without loss of image quality. (guys like me love that - billboard size, here I come!). Those pesky bitmap images can still be scaled up but at a cost of becoming pixelated (grainy).
9. VIEWING DISTANCE. Related to resolution. Next time you're at the art gallery, notice how many folks will look at a piece and then get up really, really close. I do it too. Most inkjet prints are (or should be) designed with viewing distance in mind. The further away the piece is to be viewed, the lower in resolution you can get away with. You wouldn't print a fine art piece at 72dpi - too grainy. Nor would you, at the other extreme, print a vehicle wrap at 1,440dpi - not enough megabytes in all of Seattle or time in the day to do that.
Thanks for letting me add on to your article.
Rick Sader
Lone Eagle Digital Imaging, LLC
www.LoneEagleDigital.com


