Nikon BC-7 Instructions Manual page 21

BOUNCE FLASH
The reflector of the BC-7 flash
unit can be tilted upwards and
backwards through an angle of
120 degrees (with click stop at
every 30 degrees) for bounce flash.
The bounce flash which produces
indirect, diffuse light reflected
from the surrounding wall or ceil.
ing is useful for making a picture
of soft tone without involving
sharp shades or shadows.
However, as the intensity of light
in this case is much reduced, it
is necessary to increase the 'expo·
sure as compared with the direct,
front flash. The degree of this in.
crease varies with the reflecting
ratio, distance of the reflecting
surface, etc.
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