Flash Exposure Compensation; Manual Flash - Sigma EF-630 Manual Del Usuario

are blinking, the exposure may be mismatched. In that case,
change the conditions before you start shooting.

FLASH EXPOSURE COMPENSATION

Compensating only the light amount
of the flash is possible without
affecting exposure of the background.
Flash mode: Can be used with [TTL].
Set the compensation amount in
the Mode details area of the Flash
mode [TTL]. (The compensation amount has 1/3 steps and up
to ±3 steps can be set.)
When the light compensation is set at both the camera and

the flash, the operation varies depending on the camera.
sd Quattro series
The combined amount is used
for shooting

MANUAL FLASH

Discretional setting of the flash amount is possible.
1. Set the Flash mode to [MANUAL].
2. Set the flash amount in the Mode
details area. (Available range for
setting: 1/128 to 1/1, Available
pitch for setting: 1/3EV.)
3. Check the flashgun status with
the Ready light and start shooting.
Other compatible cameras
The setting at the camera side
is prioritized.
In the distance display section in the Status area, the distance
that appropriate exposure can be obtained is calculated and
displayed. Even with the same flashing amount, the distance to
obtain the appropriate exposure varies if the camera's ISO
sensitivity or the aperture value is changed.
An appropriate exposure when using manual flash can be
calculated using the following formula.
Guide Number (GN) / Shooting distance (m) = Aperture value (F)
For the GN (Guide Number) of this flash, refer to [Table 2]
attached at the end of this manual.
MULTI FLASH
Displaying movement of the subject in one frame as if the
image is a photographic playback is possible by continuously
emitting light with the flash while the shutter is open.
Use the camera's manual ("M") exposure mode.
1. Set the Flash mode to [MULTI].
2. In the Mode details area, set the
flash amount, flash interval in "Hz"
(eg.: 10 Hz = Emits light with the
frequency of 10 times per second),
and the number of flashes in "x".
3. Set a shutter speed that is slower than the value of the
"number of flashes" / "flash frequency."
4. Check the flashgun status with the Ready light and start shooting.
The number of flashes that can be fired continuously varies
depending on the combination of the flash amount and the
flash frequency. Refer to [Table 3] at the end of this manual.
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