Sigma EM-140 DG EO-ETTL, Instructions Manual, Page: 26 / 89

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
This mode cannot be used with EOS 700, 750, 850 cameras.
1. Set the desired picture-taking mode of the camera
2. Press + or - , button
mark will be displayed on the LCD panel.
3. Adjust the focus, and take the picture after confirming the ready light.
 First curtain synchronization will be set, if
mark is not displayed.
 If the camera is set to Full Auto Mode this function cannot be used.
 To cancel second–curtain synchronization, turn off the mark on the LCD panel by using + or - buttons.
HIGH SPEED SYNC (FP) FLASH,
(A TYPE CAMERAS ONLY)
When you take a picture with an ordinary flash, you cannot use a shutter speed faster than the camera’s
synchronized speed, because the flash must fire when the shutter curtain is fully open. The High Speed
Sync keeps firing while the shutter curtain is running. Thus you can use a shutter speed faster than the
shutter’s normal synchronized speed.
1. Select the camera’s exposure mode. (“Tv” or “M” modes can be used)
2. Select a shutter speed faster than the camera’s normal synchronized
speed.
3. Slide the Power Switch of the flash to the ON position.
4. Choose the Flash Mode by using MODE button (“ETTL” or “M” modes
can be used).
5. Press + or - button until the mark is displayed on the LCD panel.
6. Focus on the subject
7. Confirm the
mark in the viewfinder of the camera, and then you can take the picture.
ۋ
With high-speed sync, the Guide Number changes depending on the shutter speed. The flash range will be
shorter (ie Guide Number will be smaller) when shutter speed is faster. (Please refer to table2 on the last page).
ۋ
Selecting shutter speeds slower than the camera’s normal synchronized speed cancels Hi-speed sync.
Then the flash will automatically set to normal ETTL operation. To activate FP flash again, follow the
procedure (No.1) for High speed sync (FP flash) described in this instruction manual.
ۋ It is possible to use exposure compensation function, with high speed synchronization operation. To do
so, please refer to your camera’s instruction manual regarding “exposure correction”.
ۋ will disappear when Hi-speed sync (FP Flash) is cancelled.
FE LOCK
“FE” lock mode allows you to choose exposure for the part of the viewfinder, and lock it in, before taking the picture.
1. Set the camera’s exposure mode (“P”, “Tv”, “Av”, “M” or “DEP”).
2. Set the flash’s mode to the E-TTL or the High Speed Sync.
3. Focus on the subject
4. Focus on the subject in the center AF frame of the viewfinder, and depress FE lock button.
 The flash unit will make a pre-flash and calculate and memorize, the amount of light necessary for correct
exposure.
 The camera’s viewfinder will display “FEL” for 0.5 sec and the correct exposure will be set.

If the viewfinder shows mark, it means that power is not sufficient for correct exposure. Please get closer
to the subject and repeat from step 3.
5. After composing the picture, press the shutter button.
 Depending on the camera model, there are some differences in using FE lock. Please refer to your camera’s
instruction manual on the subject “FE lock mode”.
MODELING FLASH
The modeling flash is used to check for shadows and light balance on the subject before taking a picture.
Flash Ratio of Modelling Flash
It can be used with EOS-1D series, 1V, 3, 7, D30, D60, 10D, 20D, Kiss Digital (300D).
When the camera’s preview button is pressed, it will fire the Flash unit according to the selected flash ratio setting.