Indoor environment is usually not sufficiently illuminated. Most compact cameras automatically use the flash in this condition. But the result is not satisfying.By watching this video you will understand that filling the shadows with a simple flash is not a good idea:some areas will end up burned, overexposed. By adding more little lights to the environment (a 4 lights device attached around the lens), the lighting approaches more to the outdoor conditions (softer light).
Another idea for overcoming the problems that come with the use of flash is using a diffuzer. About this, later.
[tags]flash, indoor photography, indoor lighting, fill flash, diffuzer[/tags]