I have a Lightscoop, the dream thing the photographers are now on search for. I guess the best thing will be if I simply show you the difference it can make while using flash indoors. Both pics done at 6pm with indoor lighting.
Without Lightscoop; ISO 250, f3.8; 1/60s; built-in flash
With Lightscoop; ISO 250, f3.8, 1/60s; built-in flash