Just to clarify, your question is not answerable in lumens, you are really asking what are the foot lamberts (the illumination per sq ft of screen) that you would see in a commercial 3D theater vs your home theater. That of cpurse depends on a variety of factors, namely the size of both screens, the gain of both screens, the particulary 3D delivery system, the number of lumens the projector puts out yada yada. Most commercial 3D theaters deliver about 2 to 4 ft lamberts and most home theaters deliver more than that. The answer once again is how big your screen is, what gain, your projector, its bulb age, the throw distance, yada yada. Hope this helps. If you need to discuss, please call one of our sales team members.