When To Use High Resolution; When To Use Interpolated Resolution - Microtek ScanMaker IIG User Manual

When to use high resolution

High resolution is important if you're processing an image
through a high-end color system that carries continuous tone data
from the scanner through the final film output. This is because
high resolution can improve the sharpness and clarity of the dots
that make up the image.

When to use interpolated resolution

Interpolated resolution is useful for scanning line art or enlarging
small originals.
• For line art: Set the resolution equal to that of your output
device. For instance, if you're producing line art to be printed
by a 1200-dpi imagesetter, you can interpolate resolution to
up to 1200 dpi for superior results. This will produce
smoother lines and eliminate some of the jaggedness
characteristic of line art scans.
• For enlarging small originals: Let's assume that you scan a
1" x 2" photograph at 300 dpi, and that your maximum
optical resolution is 300 dpi too. To enlarge the image to two
times the original size without loss of detail, interpolate the
resolution to 600 dpi. This way, the image retains clarity and
sharpness even if the print size was doubled.
Basic Concepts 1-11