Standard lights in Poser provide both diffuse illumination and specular highlights. However, it is possible to create lights that do not create highlights. Figure One shows a sphere lit by a single white infinite light.

Fig 1: One normal light

Figure Two shows the same sphere lit by a diffuse only light. The highlight seen in figure one has now gone.

Fig 2: Diffuse only light

A diffuse only light is simple to set up. Select the light you want to alter in the material room, and set the specular colour to black. That light will no longer create highlights.

Fig 3: Nodes for Diffuse only light