Bounce lighting

Bounce Lighting
Bounce Lighting, generally used in portrait photography, is lighting that bounces off a particular source (such as an umbrella, wall or blank drop down sheet) to surround the central object with light.

Bounce Lighting Flash or tungsten light bounced off a reflector (such as the ceiling or walls) to give the effect of natural or available light.

Bounce lighting. Light reflected from a surface, often ceiling or walls, to provide a soft, natural-looking light.

Bounce Lighting: Light that is bounced off a reflector to give the effect of ambient light.

Bounce Lighting - Any light bounced off a reflector (such as the ceiling or walls) to give the effect of natural or available light.
...

BOUNCE LIGHTING.-When a white surface is low enough, you should direct the light sources upward so diffused light bounces off the surface onto the original (fig. 8-5).

Although the P7100's built-in flash is good enough for most impromptu shooting, adding a hotshoe flash will provide a huge bump in output power as well as give you added flexibility for bounce lighting and remote triggers.
Raw mode ...

Bounce flash
Flash illuminating a subject by reflection off a surface as opposed to direct flash, which is flash light aimed straight at the subject. Sometimes also called " Bounce lighting." ...

See also: Lighting, Photograph, Camera, Bounce light, Flash