Red eye – Nikon SB 14 User Manual
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"RED EYE'
"Red eye," an optical phenomenon in which a subject's
eyes appear red in photographs taken with a flash
unit, is a result of the flash light's directly illuminat
ing the retina. This happens when the subject looks
straight into the camera on which a flash unit is
mounted. The effect becomes more pronounced if
there is little or no ambient light. In this case, the pupil
of the eye is wide open, and the illuminated retina is
clearly visible.
To avoid "red eye" you can take any or all of the follow
ing steps:
1. Brighten the room to minimize the opening of
the subject's pupils.
2. Instruct the subject not to look straight into the
camera.
3. Keep the flash unit as far away as possible from
the camera by means of a sync cord.
Note that once “red eye" appears, there is no way of
retouching the negatives.
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