Abstract: A new lighting design tool is presented whereby existing lighting designs can be modified to produce photorealistic virtual representations of light projected from virtual lighting fixtures (or other virtual light sources). Said photorealistic virtual representations of light are modeled in three dimensions and a user can toggle between evaluation modes (beam based or object based) so to evaluate such issues as playability, glare, and gaps in lighting coverage (as well as the more typical review of spill light, aiming angles, min/max levels, etc.)—in three dimensions, and in a format that provides a strong visual cue to a user so that, in essence, what they see in a virtual lighting design is what they will get in an installed lighting system.