Ryabukho Peter Vladimirovich RussiaSaratovSaratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83410010ryabukhopeter.optics@yandex.ru Author's articles Digital Speckle Photography with Correlation Processing of Spatial Spectrum of Specklegram for Determination of Micro Displacement of Scattering Object Methods of Digital Holography in Interference Microscopy of Reflective Object in Partially Coherent Light