Digital
Camera: Red-Eye Reduction
Before digital
cameras red-eye photos were so common it was a constant frustration.
The red-eye occurs when using flash
in dark situations. The smaller the digital camera, the more likely
red-eye will occur. This is because the built-in flash is so close
to the axis of the lens that it reflects directly
back from the eye.
The red-eye
reduction feature can
do one of two things. It can cause a preflash to occur so the subject's
iris narrows or it will emit a light to cause the iris to narrow.
While this function can help with red-eye reduction, it simultaneously
causes other problems.
Having a preflash can
cause the subject to react in an unusual way causing the photo to
result in an unflattering picture.
Another way to reduce
red-eye is to use an accessory flash. This flash is larger and is
farther away from the axis of the lens. Another option is to have
a software program that includes red-eye-reduction tools. This option
is great since it allows you to take the photos without concern
over red-eye. You can reduce the red-eye later.
Some digital cameras
include red-eye removal within the camera itself.
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