1. An imaging apparatus comprising: a spectroscopic measurement section configured to measure a spectral characteristic of a subject; a spectral image capture section configured to capture a subject image separated into a plurality of colors through color separation to create a plurality of spectral images; and a color separation characteristic determining section configured to determine a color separation characteristic to be used for image capturing of the spectral image capture section, based on the spectral characteristic of the subject measured by the spectroscopic measurement section, wherein the color separation characteristic determining section determines a count of color separations in the image capturing of the spectral image capture section and respective spectral bands corresponding to each of the color separations.