You may also
want to turn off the flash in many night photography situations. I??™ll talk about that later
in the chapter.
Auto This is the standard mode that you??™ll probably want to leave your flash set to
most of the time. When set to auto, the flash determines whether it needs to fire based
on the amount of light in the scene. This is a good mode to use when you don??™t want to
think about whether the flash needs to fire. For typical snapshot photography, just set
your flash to auto.
Forced This mode goes by many different names depending upon the camera you are
using. Sometimes called ???forced flash,??? ???fill flash,??? or just ???on,??? forced flash is probably
the most appropriate name. When you set your camera??™s flash to this mode, it will fire
regardless of how much light is available. Why would you want to use this mode? It??™s
most useful as a fill flash: when you??™re shooting outdoors in natural light, the fill flash
can erase shadows that would appear based on the way the sun hits your subject. Fill
flash, or forced flash, is great for portraits.
Red eye Red eye reduction mode has become extremely popular in all sorts of
cameras, both digital and analog. By preflashing the camera flash several times quickly
right before the picture is taken, the red eye reduction mode forces your subject??™s pupils
to close down to a smaller size, thus decreasing the chances that the retinas will reflect
the light of the flash.
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