The SilverFast Resolution Target from Lasersoft Imaging is a simple way to determine just what the maximum resolution of your particular scanner is. This USAF-1951 standard target measure 4 by 6 inches and can help you find the optimum sharpness settings for a chosen resolution. You can also find the best compromise for your scanner between high resolution and sharpness, and determine which parts of your flatbed scanner are scanned particularly sharp or blurry.
USAF 1951 Standard
The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and validate imaging systems such as microscopes, cameras, and image scanners.