To know the spectral response of a digital camera it is necessary to design its color processing. In many cases just relying on the sensor data sheet is not an option, a measurement of the spectral response is necessary. One possibility to get the spectral response is the use of reflectance charts in combination with estimation algorithms. These algorithms offer reasonable results and are inexpensive and fast. To improve the quality of the measurement the use of monochromatic light is imperative. To generate monochromatic light normally a monochromator is needed. Unfortunately...