the effect is actually better when it is in a room angelouscuitry, it gets realy washed out if its outdoors as jimgranite said. im not 100% sure but as i understands the gain in the sky effect is a measurement of how much the lightsource(s) affects the "room space", im sure e.on woudnt explain it like that but thats how it works in my eyes:) so when its inside in a enclosed environment the effect gets better since the walls bounces the light and since the enclosed environment doesnt have a big ass sky that affects the room space like a overgrown lightbulb the lightsource(s) comes off much better. anyway, thats my plain language explanation im sure someone will come around and rectify it :)