Sigma EM-140 DG EO-ETTL, Instructions Manual, Page: 28 / 89

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5. After pressing the SEL button again, the flash power level will blink.
6. Press the + or - button to set the desired power level.
7. Press the SEL button again, the number of flashes will blink.
8. Press the + or - button to set the desired number of flashes.
9.
Press the SEL button again, the display will stop blinking.
10.
When the ready light of the flash is illuminated, the unit is ready to use.
Note: Please set the shutter speed longer than; Number of Flashes you want Firing Frequency
WIRELESS FLASH
It is possible to use Wireless Flash photography if this flash unit is used as the master, and EF-500 SUPER
EOS (EF-500 DG SUPER) as the slave light source.
 The camera models of B type, can be used with “Wireless Manual Flash” and “Wireless Multi Flash”
functions only. The EOS750 and EOS850 cannot be used with “Wireless Flash”.
 In this instruction, we call a flash unit, which is attached to the camera body “Master unit ”, and we call a
flash unit at a remote position “Slave unit”.
 Set the distance between master and slave units less than 5meters.
 Concerning the slave flash settings, please refer to slave flash’s instruction manual (wireless
photography section).
WIRELESS ETTL FLASH
In this Wireless ETTL Autoflash function, the camera automatically calculates the correct exposure.
Slave Unit Setting
1. Follow the slave unit’s instruction manual and set slaveID to 3.
2. Place the Slave Unit at the desired position.
Master Unit Setting
3. Press the MODE button to select the
mark.
4. After you confirm that both master and slave units are fully charged
you can take the picture.

Wireless ETTL Auto Flash photography, high speed synchro (FP), FE lock, exposure compensation, and
FB (Flash Exposure Bracketing) can be used together. After setting Wireless photography, please
operate it according to each feature. Operation of the slave unit is not necessary.
After setting the left and right flashtubes’ flash ratio, it is possible to set the compensation amount
of slave
（
3
）
and take the picture.
1. In the Wireless ETTL mode, press the SEL button to make flash ratio value blink.
2. Press the + or – button to set the flash ratio.
3. Press the SEL button, exposure compensation of slave (3) will be
blinked.
4. Press the + or – button and set the flash exposure compensation
amount.
5. Press the SEL button several times to stop the blinking.
6. After confirming that both master and slave units are fully charged you
can take the picture.
 Changing the mode cancels the setting.
It is possible to group more than one slave flash unit and fire them according to the flash ratio
adjustment of the master unit.
 Slave unit’s ID number 1 controls left flashtube (1), ID number 2 controls right flashtube (2). ID number 3
is controlled by exposure compensation amount. Each group does not have any restriction on the
number of slave flash units.