The CRAIC Technologies (San Dimas, CA) QDI 302 microscope spectrophotometer measures and compares the spectral output, intensity and color consistency of each of the microscopic pixels commonly found in organic light-emitting diode (OLED) devices, comparing them or mapping the intensity and color of the whole device. The QDI 302 attaches to a microscope or probe station, and allows the user to rapidly acquire images and spectra of microscopic sample areas.