SIGMA ELECTRONIC FLASH EF-610 DG SUPER PA-PTTL (ペンタックス用) - Manual (Page 18)

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Mode Number of Flash Exposures
TTL, M(1/1,1/2) 20 Continuous Flash Shots
M(1/4, 1/8) 25 Continuous Flash Shots
M(1/16-1/32) 40 Continuous Flash Shots
Multi 10 Cycle
MANUAL FLASH OPERATION
Manual flash is provided when shooting the subjects when the correct, Exposure is difficult to obtain in
the TTL mode. In the manual flash mode, you can set the flash power level from 1/1 (full) to 1/64
power in one step increments.
1. Set the camera’s exposure mode to M.
2. Press the MODE button on the flash unit to select M.
3. The guide number value blinks when you press the SEL button.
4. Press + or - button to set the desired flash power output.
5. The manual flash output display will stop blinking and remain
displayed after you press the SEL button again.
6. Adjust the focusing by pressing the shutter button, read-out subject distance from the focus ring on
the lens. Then, adjust the F-stop or flash power, until the distance indicated on the LCD panel of the
flash, and subject distance becomes about equal.
7. When the Ready Light of the flash is illuminated, the unit is ready for use.
◆ You can calculate the correct exposure by using the following formula:
Guide Number “GN” / Flash to Subject Distance = F-stop
This flash unit will automatically calculate and indicate the appropriate Subject Distance according to
the above formula. (Please refer to table1 on the last page)
SECOND CURTAIN SYNCHRONIZATION
When you photograph a moving subject with slow synchronization, usually the furrow of the subject
will be exposed in front of the subject. The ordinary flash light will fire when the first shutter curtain is
fully opened, thus the subject will be exposed from the time flash is fired to the time the shutter is
closed (This is called First Curtain Synchronization). When you use second curtain synchronization,
the flash will fire just before the second curtain begins to closes, and the subject will be exposed by
ambient light from the time the shutter opens until the flash fires. The furrow of the subject will
therefore be exposed behind the subject, creating a more natural effect.
1. Set the desired picture-taking mode of the camera
2. Select the Mode of the flash. (TTL mode)
3. Press + or – , button
mark will be displayed on the LCD
panel.
4. Adjust the focus, and take the picture after confirming the ready
light is lit.
◆ First curtain synchronization will be set, if
mark is not displayed.
◆ To cancel second –curtain synchronization, turn off the mark on the LCD panel.
HIGH SPEED SYNC FLASH(FP)
(Only for P-TTL compatible cameras)
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
FP flash keeps firing, while the shutter curtain is running. Thus you can use a shutter speed faster than
the synchronized speed.
1. Set the mode of camera. (The exposure mode changes by each camera models.) Please confirm it
with the instruction manual of the camera in use.