Nikon os Speedlight SB-102 - Manual (Page 30)

CONTROLS IN DETAIL —continued.
Replacing the Target-Light
If the target-light burns out, replace it with a new one
(provided) by performing the following procedures:
1. Remove the battery chamber cap (see page 8).
2. Remove the C-type battery cartridge.
3. Turn the target-light holder® counterclockwise ap­
proximately 45°.
4. Pull upon the holder.
5. Remove the old lamp and replace it with a new one.
6. Replace the holder and turn it clockwise 45°.
7. Replace the C-type battery cartridge.
8. Replace the battery chamber cap.
• The target-light can also be replaced by an authorized Nikon dealer or
service center if you desire.
Multiple Flash Photography
The SB-102 has wireless slave flash capability, enabling
it to be triggered by the light fired from another flash
unit.
For multiple flash operation as shown in the diagram,
use either an SB-102 or SB-101 as the master flash unit
(the speedlight connected to the camera). Set the T-S
switch of the slave flash unit (the speedlight not con­
nected to the camera) to "SLAVE” or “T&S.”
After confirming that the flash units’ ready-lights are
lighted, release the shutter to fire the master flash unit.
At the same time, the slave unit will be triggered by the
light fired from the master flash unit.
• There is no limit to the number of SB-102 Speedlights that can be
used as slave flash units at one tim e.
•For multiple flash operation, all flash units must be in the manual
mode. In the TTL and non-TTL automatic shooting modes, the correct
exposure cannot be obtained because the light from each speedlight
alters the exposure measurement.
When two or more flash units are the same distance
from the subject and face approximately the same
direction, the combined GN of the units can be deter­
mined with the following equation:
Combined GN = VGNP-l-GN2^-rGN3'-l-
Where GN 1,2. 3 are the guide numbers of the flash units
• Because the slave flash unit is triggered when the light from the master
flash unit reaches it directly or is reflected to it by the subject, if the
light from the master flash unit does not reach the slave flash unit or if
there are strong light sources nearby, the slave flash unit will not fire.
For best results, test-fire the entire multiple flash sysfem by test firing
the master flash unit before shooting.
•During slave flash photography, avoid other persons using speedlights
or the bursts from their flash units will trigger your sla ve unit.
• The slave flash unit may be triggered by the light from a fluorescent
lamp.
Daylight Fill-In Flash Photography
When shooting in daylight, a backlit subject may come
out almost as a silhouette if the background is correctly
exposed. If, on the other hand, exposure compensation
is made to correctly expose the subject, the back­
ground may be washed out. To fill in the shadows and
balance the illumination levels of the subject and the
background in daylight shooting, use daylight fill-in flash
photography.
When using the Nikonos-V, its viewfinder LED indicator
will blink to indicate the correct shutter speed under
natural lighting. To obtain the correct exposure with
daylight fill-in flash shooting, turn on the flash unit and
select progressively smaller f/stops (numerically larger
f-numbers) until the camera’s 1/125 second and 1/60
second LEDs begin blinking or until either the 1/60
second or the 1/30 second LED indicator blinks. Make
sure the subject is within the coupling distance range
and, if the viewfinder ready-light is lighted, release the
shutter.
Operable shutter speed (1/90sec.)
r
L
4 lOO O SO O 250 I25 60 30
J
Adjust the aperture until one
or two of these LED indicators
begins blinking.
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