While dealing with photonics, we find that user-controllable electro-optical devices are of great importance. In this paper, the optical control of the light scattering properties of polymer-dispersed liquid crystals has been achieved by dissolving a photoconductive material in the polymer matrix. In the dark, an electric field, lower than the threshold one, is applied across the film, which, consequently, appears opaque. After irradiation with an adequate light beam, the change in the electrical properties of the polymer matrix enhances the effective field across the liquid crystal droplets, making the film transparent. The device can be switched off by turning off either the light source or the electric field. The effects of light intensity and photoconductor concentration on the film phototunability are also discussed. [ABSTRACT FROM AUTHOR]