With an external flash unit, you can use what is known as ???bounce
flash.??? With bounce flash, the external flash unit is angled toward the ceiling
or a wall. The resulting illumination is
more diffuse and eliminates harsh shadows
in areas such as under the subject??™s chin.
Shadows on the wall are also diffused,
resulting in a more pleasing picture. If you
use bounce flash, make sure the ceiling
or wall off which you bounce the flash is
white; otherwise, you??™ll add a color cast to
the image.
Another option for bathing a scene in
diffuse light is to attach a piece of white
poster board to the flash and swivel the
flash upward at a 45 degree angle, as shown
here. The flash bounces off the poster board
and bathes the subject in diffuse light.
Another option available on many digital cameras is night portrait mode, also
called slow-synch flash mode. When you shoot images in this mode, the flash
records your subject and the shutter stays open longer to record the background
scenery. Many high-end digital cameras and digital SLRs also have an option
to fire the flash on second curtain; in other words, just before the shutter closes.
This can add interesting effects to images and accentuate motion that occurs
prior to the flash firing on the second curtain.
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