When I position the viewpoint perpendicular to a surface in PS the surface often turns white, due to the lighting in the scene. (Yellow however usually stays yellow.) I've adjusted the primary and secondary light source, but that doesn't really control the glossiness in the scene, it just lowers the overall illumination, resulting in a dark and dimmed scene.
Is it possible to make additional settings to the lighting so that the colors of the surfaces are preserved even when in perpendicular viewpoints? I would still like the scene to be bright, but I don't want the glossiness.