SIGMA ELECTRONIC FLASH EF-610 DG SUPER NA-iTTL (ニコン用) - Manual (Page 20)

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LIMITS OF CONTINUOUS SHOOTING
To prevent overheating of the flash’s circuitry, do not use your Flash unit for at least 10minutes after
continiously using the flash as shown in the table below.
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 for shooting 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 to 1/64 power in
1/3 stop increments.
1. Set the camera’s exposure mode (A, M modes).
2. Press the MODE button on the flash unit to select M.
3. Press the SEL button to make the guide number value blink.
4. Press + or – button to set the desired flash power output.
5. To stop the manual flash output display blinking, Press the SEL button again.
6. When the Ready Light of the flash is illuminated, the unit is ready for use.
How to set the correct flash power level
Page 18 <<CHART A>> combination of 1
Focus on the subject and note the subject distance on the lens’ focus ring. Adjust the lens’ aperture until
the distance indicated on the LCD panel of the flash is equal to the camera to subject distance.
When you use with cameras other than the above
Focus on the subject and note the subject distance on the lens’ focus ring. Adjust either the flash power
level or the flash’s F stop display. Please refer to the following on how to change the flash’s F-stop.
1. Press the SEL button several times and make the F-stop indicator blink.
2. Press the + button or – button to set the F-stop display.
3. Press the SEL button to make F-stop indicator stop blinking.
Set the distance indicated on the LCD panel of the flash so that it is about equal to the actual
camera-to-subject distance become about equal.
Then set the aperture value of the lens via lens’ aperture ring or cameras command dial.
◆
You can calculate the correct exposure by using this formula.
Guide Number “GN” / Flash to Subject Distance = F-stop
This flash unit will calculate and indicate the Subject Distance by following the above formula. (Please refer
to table1 on the last page).
DISTANCE PRIORITY MANUAL FLASH
With this flash operation system, EF-610 DG SUPER NA i-TTL automatically controls the light output
according to the selected distance and aperture value.
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Distance-priority manual flash is not possible with D1X and D1H digital cameras.
Page 18 <<CHART A>> combination of 1
1.Set the camera’s exposure mode to either A or M mode.
2.Press MODE on the flash unit so
(GN) is displayed.
3.Press the SEL button to make the distance display blink.
4.Press the + button or – button to set the distance.
5.Press the SEL button several times to stop blinking.
6.Set the aperture value on the lens or camera.
7.When the Ready Light of the flash is illuminated, the unit is ready for use.