A selection guide issued by Diagnostic Instruments Inc. highlights the Spot digital imaging systems, which have applications in such areas as metallurgy, metrology, forensics, machine vision, karyotyping, macrophotography, bioluminescence, chemiluminescence, ion imaging, particle tracking and gene expression profiles. Downloadable from the company’s Web site, the 15-page resource helps users determine the appropriate combinations of speed, sensitivity, resolution, connectivity, noise suppression and field of view for their specific needs. It specifies various camera models, providing information on their features and benefits, and includes sections describing functions of the Spot software and hardware, along with numerous screen shots.