We present in this paper a graphical study of regions of thermally deposited ZnS thin films on glass by atomic force microscope (AFM). This study consists of volume parameters and functional parameters of these films surfaces for the object of investigating the possibility to retain fluids by these films. For doing so, we registered Abbott-Firestone curves that are based on height distribution for these films, we measured volume and functional parameters in the whole pores. Using the thresholding operator we followed parameters distribution in depth of the surface. At the end we compared these parameters by the results of another study based on slice selection at different levels.