Nikon SB-50DX - Manual (Page 25)

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4. Set the flash mode on the master flash unit to TTL auto (p. 18).
• To use the camera’s built-in Speedlight as the master unit, release the built-in
Speedlight. (See your camera’s instruction manual).
• Auto wireless multiple flash operation is also possible with the master flash unit
set to non-TTL auto. (See the Speedlight instruction manual for details.) With the
master flash unit set to non-TTL auto, the light sensor on the slave SB-50DX unit
also senses light received from the master flash unit to trigger the slave SB-50DX
unit and control the flash duration. With non-TTL auto, you can perform auto
wireless multiple flash operation with Nikon digital SLRs or cameras that are not
compatible with TTL auto flash (Nikon FM2, FE10, FM10, etc.).
Cancel Monitor pre-flashes
When using a Group I camera (p. 28), cancel the Monitor pre-flashes of the
master flash unit (p. 47).
5. Set the SB-50DX (used as a slave flash unit) to the Wireless Flash mode.
• Press the SLAVE button for approx. one
second to activate for Auto Slave Flash
mode or for Manual Slave Flash mode
indicated in the LCD panel. If the is
shown, press the MODE button to set the
Auto Slave Flash mode with
indication.
• When the Wireless Flash mode is activated,
the flash mode indication (p. 18) disappears
from the LCD panel.
• In the Wireless Flash mode, leaving the
SB-50DX unused for more than approx. one
hour activates the standby function (p. 13) and
the SB-50DX is automatically turned off.
• To cancel the Wireless Flash mode, press the
SLAVE button until the Wireless Flash mode
indication disappears from the LCD panel. (Turning off the SB-50DX does not
cancel the Wireless Flash mode.)
Wireless Multiple Flash Operation
You can perform wireless multiple flash operation with the SB-50DX. The
light sensor on the SB-50DX senses light received from the master flash
unit (Speedlight, such as the SB-50DX attached on the camera or
camera’s built-in Speedlight) to trigger the SB-50DX and control the flash
duration of the SB-50DX.
• TTL auto wireless multiple flash operation
1. Attach the master flash unit to the camera.
• Before attaching the Speedlight, turn off the Speedlight and camera.
2. Position the SB-50DX as a slave flash unit.
Slave
flash unit
Subject
Light from
master
flash unit
• Set the SB-50DX at a position (normally closer to
the subject than the camera) where light from the
master flash unit can reach the light sensor on the
SB-50DX.
• Effective range of the SB-50DX’s light sensor in the
TTL wireless multiple flash operation is approx. 7m
(23 ft.).
• There is no limit to the number of slave flash units
(SB-80DX, SB-50DX, SB-30 units or other
Speedlights with the SU-4 attached, p. 56) that can
be used together. However, if too much light from
other slave flash units enters the light sensor of the
Speedlight, correct operation may not be possible.
So the practical number of Slave flash units usable
is up to three.
3. Turn on the camera and all the Speedlights.
• To use the SB-50DX as a master flash unit with
(silver chloride) film cameras, press the SLAVE
button for approx. 1 sec. to set the Wireless Flash
mode with
indication in the LCD panel. Monitor
pre-flashes (p. 27) will not be fired even if the
Automatic Balanced Fill-Flash with TTL Multi-
Sensor (p. 25) is selected.
Technical Operation
SB-50DX (E) 02.12.9 2:33 PM Page 48