In the computer's digitized world a visual is reduced to a series of pixel dots, and time is a series of discrete units. And so, if you are going to use graphics in your web pages or other computer materials, you need to use digitized images. You can buy libraries of digital images in either black and white or color. These have been purchased, along with their limited copyright releases, for our use in web pages and other projects. Another source of digitized images is the output of your own digitizing of drawings or photographs, in either black and white or color.
Special cameras can also directly produce digital images.
They function much like photographic cameras, but contain no film. Instead, they directly create digital images and store them on floppy disks or by direct connection to a computer. The Teaching Center and the New Media Center both have such digital cameras available for your use. The normal rules and the fair use exceptions apply equally.