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Technical operation/Effective Speedlight placement
Three slave flash units are used. Slave flash unit
ብ
is used to eliminate the shadow caused by
the master flash unit
ቢ
, while slave flash units
ባ
and
ቤ
brightly illuminate the subject from
behind as well as the background to create a
more natural-looking picture.
Shooting data
nCamera: F100 (1/125 sec, f/5.6 + 1/2)
nFocal length: 40mm
nMaster flash unit
ቢ: SB-80DX set to
Standard TTL flash
nSlave flash units
ባ,ቤ,ብ: Three SB-80DX
units set to Auto
wireless slave flash
Wireless multiple flash (four flash units) Single flash (on-camera flash unit)
Notes on setting the slave flash units.
m Position the slave flash unit (usually closer to the subject than the camera), so
that light from the master flash unit can reach the light sensor of the slave
flash unit. Particularly when taking pictures while holding a slave flash unit in
your hand, make sure the slave flash unit is in front of the camera, so that light
can reach the light sensor of the slave flash unit.
m Take care not to let light from the slave flash unit enter the camera lens
directly or indirectly (in TTL auto flash mode) and prevent light from entering
the master flash unit’s light sensor for Non-TTL auto flash (in Non-TTL auto
flash mode). Otherwise, the correct exposure cannot be obtained.
m There is no limit to the number of slave flash units that can be used together.
However, if too much light from other slave flash units enters the light sensor
of the master flash unit, correct operation may not be possible. Practically, the
number of slave flash units should be limited to three.