Crosstalk artifacts in a retro-reflective auto-stereoscopic 3D display system are compensated by providing various methods of directing surface reflections of a screen away from a viewing region, i.e. a region from which the screen is viewed. This is achieved by splitting the screen in two, and tilting the left-side and right-side of the screen either towards, or away, from a projection baseline so as to direct mirror reflections away from the viewing region. Alternatively, the screen is not split, but vertical v-shaped grooves are made along the surface of the screen facing the projection line. The angle of the v-shaped grooves direct surface reflections away from the viewing region, but the grooves are substantially small so that the screen appears flat to an observer.