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.