Sigma EM-140 DG Mode D'emploi page 15

USING FLASH IN OTHER CAMERA MODES
Shutter Speed Priority Setting
When you set the desired shutter speed, the camera will select the appropriate aperture value. You cannot
choose shutter a speed faster than the camera's sync speed.
Aperture Priority Setting
By selecting the Av mode, after you select the desired aperture the camera will set the appropriate shutter
speed for the background exposure.
When used with M Mode
You can set the desired shutter speed and aperture value. You can set the shutter speed from top sync
speed to bulb.
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.
TTL, M(1/1,1/2)
M(1/4, 1/8)
M(1/16-1/32)
MANUAL FLASH OPERATION
Manual flash provides adjustment of desired flash intensity (flash output level).
The shooting in Manual Mode requires a very advanced technique.
We recommend you use the Auto mode. When using Manual Flash
photography, first take some test shots. It will be beneficial to use a
flash meter device for determining the exposure.
Flash intensity of left and right tubes can be set between 1/1~1/64. It is
also possible to set without firing one of them.
1. Set the camera's exposure mode to M.
2. Press the MODE button on the flash unit to select M.
3. Press the SEL button. (The flash intensity display of the left flashtube blinks).
4. Press the + or
" -- " is displayed, the left flashtube will not fire).
5. Press the SEL button. (The flash intensity display of right flashtube will blink).
6. Press the + or - button to set the right flashtube output level. (If
" -- " is displayed, the right flashtube will not fire).
7. Press the SEL button to stop the indicator blinking.
If the flash output level values of both tubes are the same, the flash
output level will be displayed. When the different flash intensity is set,
the flash output level will not be displayed on the LCD.
Regarding Guide Number, please refer to the [Table.1] on the last page.
You can calculate the correct exposure by using the following formula:
Guide Number "GN" / Flash to Subject Distance = F-stop
HIGH SPEED SYNC FLASH(FP)
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.
Mode
Multi
- button to set the left flashtube output level. (If
Number of Flash Exposures
15 Continuous Flash Shots
20 Continuous Flash Shots
40 Continuous Flash Shots
10 Cycle
(Only for P-TTL compatible cameras)
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