Nikon SB-10 instruction manual The Reflector, RedEyes Phenomenon

The Reflector

On the 5B-10, the reflector tilts through an arc of 1800 with click-stops every 90~ With the speedlight unit mounted on the camera, set the reflector in the horizontal position (calcul ator. on top). The use of the speedlight in the vertical position is generally not recommended, since this will result in the coverage of light falling off at the corners.

'RedEyes' Phenomenon

'Red eyes,' an optical phenomenon in which a subject's eyes appear red in photographs taken with a flash unit, are a result of the flash light directly illumi- nating 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 iris of the eye is wide open, and the illuminated retina is clearly visible.

To avoid 'red eyes' you can take any or all of the following 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 eyes' appears, there is no way of retouching the negatives.

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