WOW thanks for that extensive response. Much appreciated. So I have a photo of an existing building and I modeled some roof elements (with help from perspective plotter) onto it that have light sources (the white parts are esentially backpainted plexi with neon fluoroscent tubs behind so they would glow at night). I want to be able to create a night scene (via some day for night photoshopping…crappy glow paint over in photoshop doesnt do it justice as shown) with a glow coming from these light elements. This light source should spill onto the existing photo roof.
This is wwhat Im going for:
Ill test your suggestions in the coming days. These light passes are saved in the rendered window, correct?
