Sigma EF-500 DG SUPER Mode D'emploi page 20

■ In the case of use with SD9, SD10, depending on the ISO setting, shutter speed will change to slow
shutter speed side. For more detailed information, please refer to Exposure Mode selection.
LIMITS OF CONTINUOUS SHOOTING
To prevent overheating of the flash's circuitry, please do not use your Flash unit for at least 10minutes after
using the number of flash exposures, shown in the below table have been made in quick succession.
Mode
TTL, M(1/1,1/2)
M(1/4, 1/8)
M(1/16-1/32)
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 1/128 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)
FP FLASH
(Except SA-300)
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 camera's exposure mode to M mode.
2. Press the MODE button on the flash unit, to select the M.
3. Press the + or – button and make the indicate
appear on the LCD panel.
4. Set the shutter speed.
5. Read-out the subject distance from the focus ring on the lens. Then,
adjust the aperture value until the distance indicated on the LCD
panel of the flash matches the subject distance on the lens as closely as possible.
6. When the Ready Light of the flash is illuminated, the unit is ready for use.
■ Depending on the shutter speed, the Guide Number will be changed.(Please refer to table2 on the last
page)
■ When you use the FP flash, do not use the Wide Panel.
■ You cannot set the Second Curtain Synchronization while the flash unit is set on FP Flash
■ If you want to cancel the FP Flash mode, please follow the FP flash procedure to make the
display from the LCD panel.
Multi
Number of Flash Exposures
15 Continuous Flash Shots
20 Continuous Flash Shots
40 Continuous Flash Shots
10 Cycle
indicator
indicator
20