• This is a method, in which unnecessary shadows of subjects are removed
by a flash and the brightness of the subjects and that of the background
are kept in balance. In this case, use the flash light in the manual mode.
For cameras with a lens shutter
(Example) Recording in backlight condition
When using a 35-mm camera fitted with a 35-mm lens and a ISO sensitivity
100, normal exposure with available light indicated being F11, 1/125 sec (=
F8, 1/250 sec) and the recording distance being 3 m:
1. F number for using a flash light is GN/distance(m)=28/3 = about 8
Set F8 on the camera.
2. The shutter speed when the F number with available light is F8 is 1/250
Set 1/250 sec for the shutter speed on the camera. The settings will give a
good balance of brightness between the subject and the background.
For cameras with a focal plane shutter
The same calculation can be used as that for cameras with a lens shutter,
but the shutter speed should be at strobe-synchronous speed or slower.