It will require more time and memory to print. If you want a photo to be printed at 85 lines, scan it as close to 127.5 dpi as your scanner will allow. A 133 line halftone would be scanned at 200 dpi. Check with your printer for a resolution recommendation. KnowYour Colors Color can make your work more dynamic.
Spot color is a specific color ink.
Process color is used to create colors by combining cyan, magenta, yellow and black. RGB values are used primarily for establishing the color on a monitor and may not print correctly. Never rely on your monitor s display for color selection. The colors will vary and may be substantially different from what is printed. The printer can compare your proof to the output from your file to assure that you ll get exactly what you expect.