Ihrke, IvoIvoIhrke2022-11-022022-11-022022https://dspace.ub.uni-siegen.de/handle/ubsi/2235Finanziert aus dem Open-Access-Publikationsfonds der Universität Siegen für ZeitschriftenartikelThe paper discusses the light efficiency and signal-to-noise ratio (SNR) of light field imaging systems in comparison to classical 2D imaging, which necessitates the definition of focal length and f-number. A comparison framework between 2D imaging and arbitrary light field imaging systems is developed and exemplified for the kaleidoscopic and the afocal light field imaging architectures. Since the f-number, in addition to the light efficiency of the system, is conceptually linked to the depth-of-field, an appropriate depth-of-field interpretation for light field systems is discussed as well.en530 PhysikLight field imaging systemFocal ratioArticlePlenoptische FunktionBlende <Optik>Optisches Systemurn:nbn:de:hbz:467-22352