Targets and Test Images for Calibration
Whether visually or with color management software, target images provide a range of color and grayscale for calibrating monitors, printers, scanners, and digital cameras. Find free and commercial scanner targets and other test images. For more on color calibration, see Calibrate Your Monitor | Printer | Scanner | Digital Camera
Color Mall
Kodak and other brands of target images plus additional color management tools are for sale here.
coloraide.de
IT8.7 scanner targets.
Hutcheson Consulting
Offers a variety of free CMYK and RGB test images and targets.
inkjetart.com
These free images, including the very large PhotoDisc target, are at inkjetart.com (scroll down for link).
TASi
From scanners and digital cameras, various color and resolution targets you can use.