In Carrara 3 manual, it did not give enough information how to use with GI. I thought I should create new thread about GI here. So someone can share tips how to use it. ---------------------------------------------- It seem that everyone have common problem with skylight because both background and atmosphere is light source to GI at the same time. I could not make GI to work with either one background or skylight separately. Atmosphere color is not considered lightsource unless the dirty gas reflect the colors. Sky blue dont make us look like smurfs. Background and atmosphere should be separated to GI with scaler each. I run some scene wizard and tested eovia's precreated GI scenes. I am puzzled that some of their scenes were able to disabled skylight eventhough if I turned it on. I would like to be able to use just the background to give some GI effect to the ground and objects as if it was a sun that give off some colors. Did you have any success on realistic light environment like I described with what Global Illumination should be?