The Optical Microscopy Division of the National High Magnetic Field Laboratory (NHMFL) is part of a collaborative initiative among Florida State University, the University of Florida, and the Los Alamos National Laboratory. (See also see the August 4, 1999 Scout Report for Science & Engineering ) This section of their Molecular Expressions Photomicrography Primer provides an overview of several concepts in digital imaging technology. Java tutorials provide additional information on some critical concepts and demonstrate various digital imaging techniques.