User Guide

652
Resolution and screen frequency
basics
The detail in a printed image results
from both the resolution and Screen fre-
quency. The higher an output device’s
resolution, the finer (higher) a screen
frequency or screen ruling you can use.
Resolution is the number of dots or pix-
els per linear unit used to reproduce art-
work and images. Computer-based
graphics display images as groups of
dots called pixels. The resolution of vec-
tor graphics, such as Illustrator line art,
depends on the device used to display
the artwork. The resolution of bitmap
images, such as digital photographs,
depends on both the display device and
the inherent resolution of the bitmap
image. Four kinds of resolution affect
artwork in Illustrator documents:
See
• Monitor resolution
• Printer resolution
• Image resolution
• Bit resolution